Ask HN: Advice for a young, self-taught programmer

[TL;DR I’m a 15 year old self taught programmer unsure of what to learn and how to learn it]. Hello, I’m a 15 year old self-taught programmer and I need some help. About a year ago, I made $21,000 making apps for webOS through their Hot Apps promotion. However, that was a onetime thing, and I’ve concluded that the size of their user base makes it a bad platform to sell apps on. But now I’m unsure of what to do. As a self-taught programmer, it is difficult for me to pick up new technologies. Right now, I know Python, C/C++, Objective C, and some HTML/CSS/JS, and my most complex app was about a 1,500 line C++/OpenGL piano app. I know the syntax of these languages, but I feel like I don’t know how to apply them to make things. When trying to learn frameworks, two things generally happen: One: I find a tutorial, follow it halfway through religiously, and then quit because I’m not making anything useful. Then, I transition to the “just build something” phase, in which case I will spend hour