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.
When I play live it's a conversation that we're all having with the song and the audience... their response and relationship with the songs is as valid as my relationship with the songs.