Let go of your external expectations. Immerse yourself in the task at hand.
Bono wrote about Frank Sinatra, “Fully inhabiting the moment during that tiny dot of time after you’ve pressed ‘record’ is what makes it eternal. If, like Frank, you sing it like you’ll never sing it again. If, like Frank, you sing it like you never have before.” This philosophy is applicable to your craft; you can pretend like it’s the last time you’re doing your work, the last chance you might be able to contribute to this piece of work. This immersion naturally lets expectations, hopes, and fears fade away; none of it matters. Treating your work like a craft will help you let go of external measures of quality and focus on what’s in front of you. Everything else is an unnecessary distraction.
Whenever a thought of comparison comes across your mind, notice it, and then let go. If you catch yourself ruminating about it, tap it away like a feather duster cleaning a glass and bring your mind back to whatever you are doing. As composer, band leader, and saxophonist Charlie Parker said, “Don’t play the saxophone. Let it play you.”