In HS I didn't really try and did enough to get by...Did the same thing in college, came late to class, walked out of class early, ended up on academic probation after the first two years, nearly kicked out. It was then that I had an epiphany "damn, I better get my **** together and actually give this a shot, I don't want to have to work full time". My last 2 years I was on the Deans list, taking up to 18 credits...kind of surprised myself. In graduate school, I hated my advisor who was a real dick and taught neuroanatomy, I would come in and turn on my tape recorder and tune out...I failed that class. I still remember him summoning me to his office and telling me "you know Mark, grad school and research isn't for everyone"...damn, took that class over, aced it and nailed my comprehensive exams in the same semester, spent the last 30 years doing research in academic and the pharmaceutical industry.