When Jess Martinez was just thirteen, she was sexually abused by her sister's much older boyfriend. No charges were brought at the time, but the impact it had on Jess's life was dramatic, causing lasting damage. Many years later, when Jess discovered her abuser had been jailed for another case of child abuse, she took the courageous decision to tell her own story, waiving her right to lifelong anonymity. Speaking to Dr Sian Williams, Jess describes the challenges of bringing an old case to court and praises the police and lawyers whose efforts provided her longed-for Life Changing moment.

Producer; Tom Alban

When highly experienced caver George Linanne fell during an expedition in the massive Ogof Ffynnon Ddu cave system in Wales , he wondered whether he would ever reach the surface. With a leg broken in two places, and multiple injuries to his jaw, collar-bone, chest and internal organs, he was in excruciating pain. Some 300 cavers from across the UK took part in what became one of the longest cave rescues in UK history. George tells Dr Sian Williams about his accident, his incredible escape and why he is back caving - the sport he loves - as well as becoming a cave rescuer himself.

Producer: Tom Alban

Jacqui Furneaux had enjoyed a happy marriage, bringing up two daughters and working as a nurse. Sadly, the marriage broke down, and feeling guilty, Jacqui decided to get out of people’s way and go travelling. As a woman in her late 40s , the back-packing life was a novelty. But while visiting the golden city of Jaisalmer in north-western India - and preparing to take a camel tour into the nearby desert - she met a Dutch biker. It was a chance encounter, sparked by their mutual interest in motorbikes . It led to Jacqui abandoning the camel plans and joining her new companion on a short tour of the frontier desert of northern India.

With stops and starts and a few glitches on the way, Jacqui tells Dr Sian Williams how that sliding door moment turned out to be life-changing, leading to seven years on the open road and a journey of rediscovery and adventure.

Producer: Tom Alban

It was a summer evening in 2014, when four men barged into Paul Kohler’s family home and began a savage assault on him. They believed erroneously that he had a large amount of money hidden there. The speed of the police response meant that Paul was saved from almost certain death, and the four men were later arrested, charged and imprisoned. Although he felt vindicated by the sentencing, Paul’s worldview was changed forever when he and his family were invited to visit one of the attackers in prison, as part of a Restorative Justice scheme. In an episode recorded in front of a live audience at the Hay Literary Festival, Paul tells Dr Sian Williams about that Life Changing confrontation, and how frustration with the way his ordeal was reported led to him into politics. Producer: Tom Alban

In 1975, Richard Dailey was the victim of a freak wave that swept him overboard from the vessel he was working on in the North Sea. His daughter Angie was just five years old - and the news of his death was one of her first memories. Although they were compensated financially, the impact of that loss was difficult to understand and over the years it caused tension between Angie and her mother. Angie inherited a treasured box of old letters and photographs from her father, but felt unable to open it.

Angie wrote in to Life Changing to tell Dr Sian Williams how a decision to mark his life, on the 50th anniversary of his death, helped her finally know her father and understand her part in his life.

Producer: Tom Alban

Like so many who serve, Falklands veteran Geoff Stear took trauma away with him - in his case a very particular reaction to the smell of meat. It was so powerful and debilitating that it made his life almost impossible, leading him to injure himself and endanger others as he tried to get away from the perceived danger. On several occasions it left him hospitalised – once with a broken neck - with no recollection of how he had got there. His life hit rock-bottom, until a chance meeting with a stranger changed everything. In this heartwarming episode, Geoff introduces Dr Sian Williams to his unlikely saviour Charlie, whose capacity to intervene when danger threatens has given Geoff back his freedom and sense of worth.

Producer: Tom Alban

In her early twenties Carol Cairns, the daughter of a priest in Ireland, had a passionate affair with a young bohemian poet called Benedict Ryan. In the Dublin of the 1960s, their improbable partnership burned bright but briefly. Somehow the gap in their backgrounds was too great. Not long after, life took her in a completely different direction. Shortly after her 70th birthday, while thinking of names for a grandson to be, she remembered Benedict. Where was he now? After a failed marriage, she used Skype to see if the flame still burned.

Carol tells Dr Sian Williams about the emotional moment they reunited, after almost half a century.

Producer; Tom Alban

Phillip Browne was born into a large and loving Windrush generation family in Birmingham. Church and singing were an important part of his upbringing, and when he struggled at school it was singing that gave him an escape and a status. But just as he was beginning to show signs of real potential, a devastating ear infection robbed him of his hearing completely in one ear - and Phillip was told by a doctor that a singing career was out of the question. Phillip's struggle in the aftermath of his illness and his need to find a job resulted in him becoming a London bus driver. He knew the security of employment was a relief to his father who had spent a lifetime working on the railways, but it seemed to be leading him further and further away from his dream. Until a chance meeting with an old college friend turned his life in an extraordinary new direction.

Phillip tells Dr Sian Williams about that Life Changing moment - and his incredible journey to the bright lights of the West End stage.

Producer: Tom Alban

Robin Elsey Webb is a young and already very successful yachtsman with a dream of tackling the famous Vendee Globe, the single-handed round the world yacht race. But his plans were shattered during a trip to Antigua, when he was violently attacked and suffered severe head injuries. With his life hanging in the balance, it fell to his partner Liz to make swift and bold decisions about his treatment. Robin's job was to try and stay alive.

Robin and Liz join Dr Sian Williams to piece together their own very different experiences of that terrifying ordeal, which changed so many things for both of them.

Producer: Tom Alban

As a bright adventurous 16 year-old, Angela Tilley was thrilled to get a job in a busy London office. But after a year's unwanted attention from one of her co-workers, attention that today we would call stalking, she started having panic attacks on the way to work. The attacks became a debilitating daily occurrence, leaving her mentally and physically exhausted. Her courage in pushing back against her fears, forging a career and having a family came at a huge personal cost. But one seemingly innocuous purchase was about to change her life forever.

Angela tells Dr Sian Williams about how she overcame her challenges and how she managed to stop her phobia defining her life. Producer: Tom Alban

Husband and father, Larry O’Brien, loved the freedom his job as a long-distance lorry driver gave him. But on March 6th 1987, that freedom was almost lost in the horror of the Zeebrugge ferry disaster, in which almost 200 people lost their lives. Larry – who could not swim – risked his own life to pull 30 people to safety. Almost 40 years later, Larry tells Dr Sian Williams why he never felt like a hero, how he came to terms with what happened, and why – after a career change into local politics – he decided to return to the road. Producer: Tom Alban

When 18-year-old Stacey Goodwin got a job at a bookies, she put a pound coin into a slot machine and won enough money for a night out with her pals. It was the trigger for a destructive gambling addiction that led to a life of shame, brutal isolation and deceit. The money she lost over an eight-year period was eye-watering – on one occasion, frittering away a £50,000 online win in a matter of days. Sometimes suicidal, and always lonely, it was the damage she did to those closest to her which hurt the most.

When her addiction saw her undermine the financial security of someone she loved, she reached a crossroads. Stacey tells Dr Sian Williams how she found the strength to ask for help - and turned her life around.

Producer: Tom Alban

Warning: This episode contains discussions around suicide. Details of help and support are available through the BBC Action Line at bbc.co.uk/actionline.

In 1977, Ed Stewart was a happy-go-lucky teenager with his whole life ahead of him. With a new engineering job, a girlfriend and a motorbike, life was good. But when he dropped in on a friend’s party, a violent row with another teenager - who was carrying a shotgun - turned Ed’s whole life on its head.

Ed had to learn to navigate the world in an entirely different way, but he made a success of it - becoming a piano tuner to the stars and counting Jools Holland and Brian Ferry as his customers. Despite a life of adversity, he tells Dr Sian Williams how not just one, but two Life Changing moments led him to be what he refers to as a “glass-three-quarters-full” kind of bloke.

Producer: Tom Alban

For Lisa Hover and her husband Andy, life on the Hampshire Dorset border with their family of four children seemed idyllic. Even when a routine sight test on their daughter Annabelle as she started Primary school picked up an abnormality it all seemed manageable. But the abnormality turned out to be macular degeneration and early sight loss, which itself masked a more severe and life shortening genetic condition. The diagnosis of Batten disease changed everything. And yet, with no cure available, and physical and mental decline forecast, Annabelle lead the family in demanding everything from her limited life span. That included setting up a charity, Batten fighters forever or BFF ( battenfightersforever.com ), continuing her Girl Guiding and going skiing. Lisa talks to Sian about the challenges, the joys and the sadness - and particularly about Annabelle's desire to have a White Christmas will all the family.

Producer; Tom Alban

As a young man Mohammed, or MFA Zaman arrived in Britain from Bangladesh with a working visa, a patron and a job lined up as a chef. On arrival all the promises of a bright future turned to ashes. His patron confiscated his documents and put him to work. It was a punishing schedule. He then discovered that his boss had tried and failed to get him a Visa extension, meaning that he was working illegally.

But at this lowest of low ebbs in his life, Mohammed decided that he needed to do something - and that something was to volunteer at an old people's community club in Lewisham, near where he was living. For three hours a week every Tuesday, he helped serve the elderly visitors. He talked to them, befriended many of them and they, in turn, started to show him that London wasn't all bad. It was a Life Changing decision and it would lead eventually to him being a volunteer at the London Olympics and a representative of London at the Paris Olympics. But clearing his name and proving to the authorities that he had done nothing wrong and was the victim of modern day slavery was a massive challenge.

Producer: Tom Alban

After a whirlwind romance, Paul Mason and his wife Isabel were in no doubt that they wanted to start a family. It was not easy, but eventually that ordinary miracle happened. And yet it was a little more than ordinary - because they discovered they were to be parents to triplets.

Paul tells Dr Sian Williams about the joyful and harrowing life-changing events of his children’s birth, and explains how the family have since discovered the extraordinary generosity of strangers.

Producer: Tom Alban

Mother-of-two young children, Tanja Bage, had always been a keen singer and performer, so she was increasingly aware of her shortness of breath. The diagnosis was cancer, which required almost immediate surgery to remove the tumour, and with it her vocal chords. She would be losing her voice, and she had just a week to prepare herself and her family.

Tanja tells Dr Sian Williams about navigating the challenges of motherhood whilst having to re-learn how to speak – and reveals an exciting new artistic venture which has changed her life.

Producer: Tom Alban

After moving to Los Angeles, 12-year-old Dan Edozie and his mother were left homeless and begging for food. Life was not easy: they slept where they could, sometimes on public transport, sometimes in the refuges of the city’s infamous Skid Row. But a chance separation from his mother was about to change his fortunes forever.

Dan tells Dr Sian Williams how this life-changing moment allowed him to take control of his own destiny and set his sights on sporting greatness.

Producer: Elaina Boeteng

Sarah Fairbairns spent much of her life feeling she was a bit different. Growing up in the 1960s and 70s, she gained the reputation of a wild child – from travelling to India, to dancing on stage with the cast of iconic counter-culture musical Hair. And yet all the while, she faced bouts of sadness and depression, and a confusion as to why that should be. Later in life, Sarah made a discovery about a medical childhood trauma that changed the way she viewed the world – and wrote in to Life Changing to share her experience.

Now in her seventies, Sarah speaks to Dr Sian Williams about how confronting her past has provided belated but extraordinary relief.

Producer: Tom Alban

In 2013 Nick Hitch found himself at the heart of a violent attack on a Gas facility in Eastern Algeria. It was later revealed that the militiamen were affiliated to Al-Qaeda. As a senior project manager Nick was deliberately targeted, threatened with execution, forced along with his colleagues to sit for hours in fear of detonating explosives to which they had been attached, and ultimately packed into a vehicle alongside a man with a crude suicide bomb on his knee. Thirty-nine foreign workers died during the attack, several of them Nick's close colleagues. Talking to Dr Sian Williams, he describes how the attack unfolded, how the challenges affected and continue to affect him, and how he has sought to put his horrific experience at the service of others who have faced similar trauma.

Producer: Tom Alban

Anyone affected by any of the issues described in this programme can find help and support at www.hostageinternational.org