You sound like me haha, always working on different things what I have found works best for me is working with others who have skills or experience in those projects directly. People who can help scale and maintain the product. I think of it as a investment.

I'm currently working on 3 projects in all different areas. Looking for a partner for 4 which is a Saas for life automation.

Also drewwilson.com has a cool timeline for his projects check it out