“There is no should. There is no living up to your potential. There is just doing your life. You can’t do someone else’s life.”
— Penelope Trunk, Living up to your potential
Or put another way: “You can lead a horse to water but you can’t make it drink”.
Stop obsessing about what you (and trying-to-be-helpful others) think you should be painting.
Stop negatively comparing what you’re creating to what other people are doing and just get on with doing what you’re doing, wanting to do, and enjoy doing. Which is not to say don’t be constructively critical of what you’re painting, but you’re living your life and not trying to recreate someone else’s.