Look into “recreational programming.” Make shit for the joy of making shit. Creation in it of itself is something to be sought after imho. Did’t finish that website? Who cares?! Don’t have any useful ideas? Make something useless!! Don’t worry about “users” or making the next big thing in tech. If you’re having fun click-clacking on your keyboard and solving problems, that’s all that matters

So to answer your question, I’ve dabbled in a little bit of everything: web, db, graphics, interpreters, osdev, the works. The very few projects I’ve ever “finished,” however, are my lower-level ones; I just love getting right up close to the metal. Find a niche that interests you, start a million projects in it, and be proud of the one you finish years after you probably should’ve

Right now, I’m working on a custom programming language/game engine built with Vulkan and LLVM. It’s got first-class support for a bunch of cool game and graphics stuff, and I’m super passionate about it right now. I’ll probably lose steam and only come back to it months after, but I don’t mind

Edit: Also, don’t be afraid to use libraries to focus on what you want to focus on. I used to have an obsession with writing absolutely everything myself from the ground up, but I’ve since come to the realization that other people are MUCH smarter and more talented than I am, and I should trust them to write software for me. A great example of this is LLVM and my graphics language — depending on someone else to do the super complex compiler design lets me focus on what I wanna make: a language front-end and graphics library. It’s important to limit your scope to only what you care about