I spent much of high school trying not to be interested in ideas. I studied hard and made good grades, but I didn't hang out with the nerds. This was partly because hanging out with nerds wasn't cool and partly because the kind of intellectualism they exuded didn't enthrall me. They talked about Camus and Sartre and Nietzsche -- people I hadn't heard much about in my life as an Army brat and people my mildly anti-intellectual father would have disdained had anyone explained to him who they were.
Then my sister's husband (an aspiring psychologist whose preference for graduate school over employment my father wasn't wild about) suggested I read Beyond Freedom and Dignity by B.F. Skinner.