Learn to edit properly. You can't imagine the amount of ms. That's one of the ways my column Ready and Quilling might come in handy. I'm looking forward to the one on plotting. Steve, I really appreciate the time you've spent with us.
Writing is a lot of hard work.
Don't do the crime, if you can't do the time. Even though epublishing is still faster than print publishing, writing is still an agonizingly slow process. It takes years to learn the craft, then years to get published and then years to build your reputation and it never ends. It's not for everyone. You have to ask yourself this question, before you decide to try to sell your work.