Once you have grown and learned the 80-90% of stuff that is easy, exciting, and has quick returns, all that is left is the hard stuff. And the hard stuff is bo

Once you have grown and learned the 80-90% of stuff that is easy, exciting, and has quick returns, all that is left is the hard stuff. And the hard stuff is boring---it's always boring. It's the nitty gritty details that only a passionate specialist loves. That being said, it sounds like what you're missing is a group to work on projects with. You don't have to take the lead on programming, instead you can lead a small group of people in the right direction while taking the lead on a product and learn a lot there, or take on sales and marketing. That's exactly how I work on side projects, I have a group of 2-3 great engineers with a diverse set of interests, and I work more on the business side and get brought in for architecture/stuck-on-a-hard-problem types of things. Beyond even changing, it's incredibly hard to be motivated and push a project forward alone. Having a group makes it a lot easier, and I'd imagine that's a big part of why there are almost no VC backed solo founders.