I was in a similar place as you at around the same age. I turned 30 and took stock of my life. I was in the profession I wanted to be in, but working for a total A-hole. I was making an obscene commute to this hell-hole work place, was consuming way too much caffeine, and really getting stressed driving. I was still playing rugby, but was suffering a string of nagging injuries that slowly robbed me of my ability to train and play. Socially, I occasionally got lucky and found a woman to date for awhile, but the pickings were mighty unrewarding. I had a "list", and most candidates were stricken pretty quickly. In a short time span, I had a road-rage incident that really scared me. Nothing happened other than the other guy seeing me and the extent of my anger and willingness to do some serious harm, wisely decided that he would get back into his truck in one piece. I also started having heart palpitations, which turned into a full blown cardiac work-up.
Long story short, it was determined that I had way too much stress in my life, and was not sleeping enough, drinking too much caffeine, etc.
Also around this time, I was set up on a blind-date... who eventually turned into my wife.

Having the RIGHT person in your life really solves a lot of problems. I had to quit playing rugby due to some severe and irreversible arthritic changes which ultimately led to joint replacement. I no longer over indulge in anything, (alcohol, caffeine etc.) and have found other things to indulge in. (knives, guns, hunting etc.)
So, VW, go get yourself a good woman, get married, have some kids, a big mortgage, car payments etc. You'll have a whole bunch of things to be happy and proud about. You'll also get stressed and depressed about these things too. Life goes on, go buy a new knife... it helps.