The final Thursday in June was my last day in medical practice. I've had exactly one job in the 29 years since I finished my endocrinology training, and it wasn't easy saying goodbye to office staff, colleagues, and - hardest of all - patients. Why now? I'm in good health and still very much enjoy the challenge of seeing patients with complex cases. It wasn't malpractice or the frustrations of dealing with insurance companies, and it certainly wasn't the Affordable Care Act (Obamacare), which actually seems to be working.