/lit/ - Literature

I'm a millennial and want to write; what are some tips to not suck shit?
So far, I know should try to finish things. I try really care about flow and voice. I try to make points and express myself. I try not to impress people with how I'm so free and progressive and artistic and cool and smart and alternative, becuase it's bullshit, and its awful to read. I try to never just fill in space. And I try to serve my neurosis without bitching and moaning, and my masturbatory fantasies without getting carried away.
What else is there to do? What should I read to get a better sense of what I want my prose to be like?
Also, I feel like I, and everyone around me, write in first person too much, or try to make everything a memoir, and its because of a wide sense of self-importance.