I was the lazy one (and naughty). When I was a senior in high school, for some reason I decided to study extra hard for a biology test. I got an A+ on it and the teacher asked me if I cheated---I was stunned because while I was a lazy student, I would never consider cheating so---no, I didn't cheat, I just studied!!!
It taught me a valuable lesson about how people (teachers) perceived me and from that point on it was A's all the way including college classes. I learned to enjoy the challenge and beauty of education.