Don't bite off more than you can chew. Goes for a lot of things. I used to write lots of short stories, then I started working on a longer, novella length piece

Don't bite off more than you can chew. Goes for a lot of things. I used to write lots of short stories, then I started working on a longer, novella length piece. After ten chapters or so I got sick of it, but didn't want to start anything else with that unfinished. Pretty much stopped writing after that.