I had a feeling after my yesterday's jam session performance that was completely new to me — I was able to judge it a more granular manner.
I didn't like how it sounded, but I had specific goals in mind regarding the material I wanted to play in the solo and communication with the house band, and I actually accomplished them.
In my classical music school mindset, performance was an outcome of practice, now I'm able to see it as an opportunity to learn and improve as well.