Yeah so chess worked as a pretty decent means to an end. Who knows, perhaps only because of the temptation of improving my rating was so great and I'd do anything to do so; whatever motivates me! But this could apply to anyone who likes to do well and get the gratification of increasing their rating as they get better. In my case I didn't really accept being at a plateau and insisted on finding the root of the problem.
If I was just taking a class, let's say English or something, I could get a good grade by just "trying," lol. Chess just doesn't give a damn :p It constantly and mercilessly throws you problems and so it's inevitable your mind is going to go through a lot of things to get better at it. Even in philosophy classes, which are challenging, you can get a lot of partial credit if the teacher simply thinks your approach has a lot of promise, even if it has flaws.
edit: forum broke my posts