[lmm]

Solve real problems - write programs that "scratch your own itch" - and learn as you need to. It's hard to tell how well you're learning when you don't have actual results to go by.

Honestly though that set of interests doesn't seem like the sort of thing that lends itself to real problems; it sounds to me like you've already got more than enough CS theory. If you're looking to learn the kind of programming that will make you better at doing it professionally, you need to start making practical things. Find a hobby that could do with a website/app or something else in your life that can be automated.

[modarts]

Either that or work at a company that provides you a rich enough set of problems where you can apply your disjointed knowledge since it'll force you to synthesize it into a working solution.