We all look at our lives and wonder "what if..?" Presented with an array of doors, we can only choose one to walk through, leaving us to ask if made the best selection, and consider how our lives would have been better, or at least different. We discuss some of our own key moments, and look at whether asking "what if..?" is helpful or harmful. What can we learn from the decisions we made, and what can we learn from the paths not taken? How can we avoid the slippery slope of regret and dread...