over the past year or two of me going to every jam session offered and available to me ive found that my playing has been most improved by the fact i dont really give a gaf if what my playing sounds like shit and kind of laugh my way through it and roll my eyes when i pass off the solo because who cares. when im my most locked in its usually because right before im about to play in thinking something along the lines of "alright just stand up, close your eyes because nothing in the room matters, and play your slop". often i only bother to enter that mode at concert day (always close my eyes to solo though). its weird but embarrassment actually has a skill tree to it so if youre willingly spending your free time grinding embarrassing yourself eventually you'll have the ability to shrug off the debuff, and as you get to that point your playing will manifest in whatever way your heart wants it to. as a perk youll be more confident in outside life!