Holy crap. I thought I was the only one. I know I'm smart, I just don't put in the effort to study. I'm friends with all these people who don't have the problem

Holy crap. I thought I was the only one. I know I'm smart, I just don't put in the effort to study. I'm friends with all these people who don't have the problem I have (or they've figured out how to solve it). At the same time though, I'm constantly working on side projects. Currently, I'm building an autonomous tricopter, because I thought it'd be cool to build. Last semester, I wrote a webapp to handle an event we were having. Previous semester, I was working on a way to control my room from my computer (still working on that, just not as intensely). These all easily answer "Why am I doing this?" (tricopter: because it's cool. Webapp: Might be able to make money from this [Note: didn't make any money from it ): ]. Computer-controlled room: It's cool, and it allows me to be incredibly lazy.) I know that I'm not an idiot, I should be getting As, and I do get As in the classes that genuinely interest me. Unfortunately, at least 75% of the classes I take don't interest me, so I get lost in trying to answer "why am I even bothering with this?"