You will need:
* A good high building or cliff
* No regrets
* Optional: A cape
1. Locate a nice high building or cliff to jump off of.
2. Go to the top.
3. Jump.
4. Do a flip. Die.
http://img48.imageshack.us/img48/5941/howtosuicidebuildingvl2ek8.jpg
This method has a number of advantages. It's simple. It's dramatic. You can save on funeral costs and have yourself buried in a pizza box. On the other hand, if it's raining, your clothes will get soaked and your body will just wash down the drain. Also, it's just not terribly original. Dozens of people try to jump off the Golden Gate Bridge every year. Boring.
VERDICT : Not worth it, use your own fucking brain/grow up