I've had past episodes. In elementary school, I was too fast of a learner, but they weren't just going to let me skip grades. I was forced to suffer through the whole shebang, designed for kids who learn at a much slower pace. It was so boring, I once told my mom I'd rather be dead than doing this damned homework.
Never did anything drastic, though. Never ran away from home, never attempted suicide, and never became excessively violent. I took martial arts classes starting in 4th grade, which was a nice outlet. Of course, it was defensive martial arts, budokan taijutsu, but we got to hit plenty of training pads and swing real weapons.
Years later, I pretty much became bored with existence, and started having weird dreams. Still never did anything drastic, just slept a lot. I would rather have been having those dreams than living the daily drag. I'd kinda fall into a state of meditation, between the waking world and sleeping, and could just feel my senses drift away into dreamland, while still remaining conscious.
Couple of years ago, I got depressed when I realized my life wasn't going to be anything like what I'd hoped when I was younger. I wrote 10 songs in 10 days, which was about as long as the episode lasted. That topic's in the abyss of misc, now.