The great literary agent Bruce Hunter had one piece of advice to struggling authors; Just Keep Typing.
It's what you do if you're a writer. If you find you can't, get a better typer, a new keyboard, a new computer- whatever it takes to get you back in the slot- typing.
Stop complaining: you chose it. You could have been a fireman, a doctor, an artist a composer- but you had to chose being a writer didn't you?
So shut up and just keep typing.