Settle in your mind what you want, what your goal is with your writing, and then take steps to reach that goal.
They write, because they have loved so much to read.
And on to that particular piece of advice—get your story down. Tell your story from beginning to end. Make it exciting. Don’t wear yourself out correcting and re-correcting page one. Once you’re told your whole wonderful story and you don’t think your first page is or first pages are worthy, go back. But don’t make yourself sick of a story before you’ve told it.
Tell a great story. That’s the most important. Tell a wonderful story, and while you’re shopping it, sit down and tell another wonderful story. Don’t ever stop. Don’t ever, ever let anyone tell you that it’s a pipe dream. Dreams are lost because we believe they can’t be reached.