kinda yes/kinda no. My life was very uncertain senior year in high school. I was in advanced classes (doing well), taking college at night, but I had no urge to continue my education. I simply wanted to do drugs. Then I got my ex wife pregnant, and after that, I really couldn't afford to go to college anymore.
But that experience actually set me straight. I stopped drugs, became responsible and received the most precious gift in my life. I also have a good job now. But I really wish I had finished school, but I don't know if I even would have. I'd probably have dropped out and began working at a mcdonalds wishing to achieve nothing more than being able to barely pay my rent and buy a QP of some ganja.
ya never know.
(oh and yes, there are some things I horribly regret. but only one even comes close to life altering like this.)