I found running helped me alot, even though I didn't realize it at the time. It was a great escape and the natural high would compel me to exercise more and more frequently. I now do marathons regularly.
I remember once, after a long hard 2 hour run at 3am, I'd sit on the porch and stare up at the sky. All my senses would go into hyper-drive, everything seemed so lucid and crisp. The rustling of the leaves, the sweet taste of the midnight air the stars seemed to spiral away from me and I'd experience this overwhelming sense of peace and harmony. Everything I touched would send tingly sensations to my brain, the summer breeze blowing across my skin, the hardness of the ground on which I sat. I'd just sit there for half an hour before it was time to go in for a shower.
That was many years ago and unfortunately my body has since built a natural resistance to these highs. I still feel pretty good after a run, but nothing like what it used to be.