I like this topic.
I'm only 21 now, but I had a profound eyeopening experience last year on some hallucinogens in the desert that turned my life view around.
First, I realized that I felt restless and discontent in life, and I didn't know what I wanted. I said to myself "I feel restless and discontent, and maybe a bit depressed. I don't really know what I want, or why I want it. So far my life has been about having 'fun', but I don't really even know what that means."
My stomach turned. I felt kind of gross.
The very second after I admitted this to myself, I also realized that >=95% of my peers probably feel the same way. In fact, everyone I'd really been friends with up to that point really seemed to have the same goal: Get drunk and pass the time until someone hands you a diploma. I thought, "I might not know what I want, but I want more than that."
The second following that, I realized that by recognizing this tendency among my peers, I've effectively been vaccinated against it. Everyone else is going nowhere, so I'm going to be the guy that goes somewhere. It'd be easy to "make more", "do more", "live more" than most people my age because most of them aren't really making/doing/living much at all.
Three seconds on LSD watching a giant effigy of a man burn, and my life hasn't been the same since. I decided on something that I wanted, and now I spend all of my time, energy and effort chasing after it, instead of letting it pass by. Even if I'm lazy and sitting on the couch, my head is still attacking the same problem.
I don't think I'll ever be "bored" again.