Is suicide justifiable for someone in my situation?

When I was a freshman in college I wanted to kill myself. I didn't. I'm really glad I didn't. Get outside. The light helps. Try to get a job in construction, physical exertion releases happy hormones. Plus, construction guys are y. Don't kill yourself. Do something else. Have more fun with it. If you've got nothing to live for than you've got nothing to loose. Get in your car and drive to some distant place you always wanted to go, if you don't have a car get a job at McDonald's and save up for a one way plane ticket to where ever. Think up some ridiculous things that you always wanted to do, and do them. I have really big problems with depression sometimes and I always promised myself, the next time I am set on killing myself I'm just going to hop a plane to New Zealand.