There's a more generic term for what you're experiencing, which is "lack of motivation." On some level you don't care much about what you're doing; if you did, I guarantee you wouldn't be paralyzed. When you're motivated, things tend to fall into place.

That's not an indictment of you. Contrary to popular belief, motivation doesn't much come from within. For almost everybody, long-term motivation is about other people: your friends, your community, and the world at large. You'll be motivated to do something when these groups of people push you to.

And the mechanism for that push is almost always the same: status. In the long term, human beings find it very easy to do things that increase their status, and very difficult to do anything else (except for things that are inherently more pleasurable than difficult — but that generally doesn't include studying CS theory).

This is really hard on college students, because even though good grades will increase your status after college, they rarely do much for your status in college. If you're good, professors might care, but the collective student body won't.

The solution is to find people who really care about your performance in your field of study — maybe a professor's lab, maybe a group of high achievers, maybe (ideally) a club with an external goal (e.g. autonomous vehicle club) — and make those people central to your life by spending a lot of time with them. If you do, it'll become natural for you to work hard at your field. Although still, you'll only be driven to do things that directly increase your status in your group.

And of course, this solution can be hard to implement; spending lots of time with a new group of people takes its own motivation. It gets a lot easier after college, though. After college you get a job, and wherever you work, everybody will care about how you perform.