Coach education notes the importance of effective transitions between life and sport, yet research evidence supporting coaches to make such transitions is lacking. The present study used a mixed-methods design to explore 41 highly qualified coaches’ perceptions of how responsibilities in life beyond sport spill over to coaching practice. Additionally, we examined coaches’ transitions between roles in life and sport and the implications for their health and coaching practice. Coaches completed questionnaires measuring perceived stress and emotion regulation, and a writing task about how roles outside of sport impacted their coaching practice. Linguistic analyses using Linguistic Inquiry and Word Count software revealed that coaches with lower levels of perceived stress expressed more positive emotions when writing about the influence of life commitments on their coaching practice. The findings also suggest that coaches’ perceptions of the coaching process can be both positively and negatively influenced by life commitments spilling over into sport. Further, coaches reported challenges with the process of undertaking micro role transitions and highlighted implications for their mental health, coaching effectiveness, and relationships in both sport and life. Integrating organizational and sport psychology research, we offer guidance to optimize coaches’ transitions between roles to promote health and optimal performance.