Personally, I've found one of the more stimulating ways of playing in recent times has been to kind of move outside the free improvised area and work with people who are probably improvisers but they have a particular way of working.
I'm having as much fun today as I did when I made $55 a week, because it is as much fun.
I auditioned for Robert Redford once and I was so starstruck I couldn't even speak. I had a mic wire at a screen test clipped to me and then I got kind of nervous and I paced in a circle and then took a step and tripped and fell on my face. You just have to forgive yourself and keep going on.