You can accept a result without pretending you are pleased with it.

Acceptance gets confused with approval, so people either keep fighting a settled outcome or perform a contentment they do not feel. There is a third place to stand: this is what happened, I will work from here, and I am still allowed to dislike it. Honesty about the disappointment is what keeps the acceptance from curdling.

If you are carrying something that will not change, try saying both halves plainly, even if only to yourself. Notice how much less effort that takes than the performance did.