In this issue of Thoracic Surgery Clinics, guest editors Drs. Stephen Yang and Jinny Ha bring their considerable expertise to the topic of The Professional Lifespan:: From Residency to Retirement. Profession transitions in thoracic surgery are difficult at any point in ones career, from fellowships and first jobs through mid-career moves and retirement. Every thoracic surgeon goes through these transitions, but needs guidance to do so effectively. This issue covers the entire career lifespan of a thoracic surgeon, plus important related topics such as finances, wellness, lifelong learning, and diversity.