Proving yourself to everyone is a full-time job with zero pay. Quit and see how much energy comes back.

The audience you are working for is not fixed. Satisfy one group and another appears, because the goalposts belong to other people and they move without telling you. That job has no completion condition, which is why it never feels finished. The energy is real, and it comes out of the same supply as everything you actually want to do.

Name the people whose opinion you would keep if you could only keep three. Do the work for them and for your own standard. Let the rest form whatever view they like, and notice what you have left over by Friday.