once you get screws in your back, you're pretty limited with what you can do and what you can't.
I worked almost 30 years in rock'n'roll, and after all that time, do you think it's easy to try and bottle all that momentum and energy? no, but smokin' sure as hell caps a lot of the motivation, subsequently, restricting my needs to get up and do 'something, .... anything!' just drives you nuts otherwise, which it has....
(BIG SIGH)