One thing you have to do is change your mindset. You are no longer an artist, solely responsible for creating high standards of musical expression, and the sole arbiter of what is good.
Now you are an employee, dedicated to pleasing your customer. They decide what is good, and they are right. Especially treat the wait staff like equals, because they are. And they appreciate it, and will take care of you.
If you can't make that switch, and many can't, don't do it at all.
Secondly, play well within your ability. Nobody is impressed with difficult pieces played almost perfectly. Everybody is impressed with easy pieces done very, very well.