Terrific advice here. I've been self employed since 1971. One thing I see with the newly self employed is that they seem to have dozens of ideas, but can become hopelessly distracted by them all.
If there's one thing I've learned, it is that completion is paramount. Make a decision to work on one project or website, or whatever and laser focus your attention on completing it and then move on to the next one. You may have to order some priorities. But, completion is what ultimately brings home the bacon.