Pastor Dan's sermon on Father's Day emphasizes the power of small habits and disciplines in making a significant impact on one's life, drawing from Romans Chapter 7 and the Apostle Paul's struggle with sin and righteousness. He encourages the congregation to choose long-term goals over immediate desires, using athletes' discipline and training as an analogy. Pastor Dan underscores the role of the Holy Spirit in helping believers maintain the right disciplines and overcome sin. He concludes by inviting listeners to reflect on what they want most in life and align their habits with their spiritual and personal aspirations, offering an opportunity to accept Jesus as Savior.