I had the classic 40 meltdown. I did. It's embarrassing. It was pretty funny. But then I recovered. To me it was like a second adolescence. Hormonally my body was changing my mind was changing and so my relationship to myself and the world around me came to this assault of finiteness.
I just completed a tour in Europe. I played every night. This requires traveling some days for six hours in a van or a train or a car. After six weeks of that I checked into the hotel and just fell apart.