Does anybody else feel "lazy" due to OCD?

Ever since high school I've noticed that I've been unnaturally lazy and "tired". Earlier in school i would do the bare minimum and pass. But ever since school started requiring a structure to follow, deadlines, reading large texts and such, I've just been overwhelmed by it all. I end up overthinking the perfect way to approach my study material, and start all over again if I don't "get it the right way". Or I would start solving a math problem, then list down ALL the other alternative ways to do the problem. Otherwise I literally feel like I'm not studying at all. College is about to start and i don't wanna feel like this anymore. Any advice? I really wanna pick up pace and be at par with my peers.