Just went to a funeral of a family friend that was an addict and hung himself in his garage. He was in late 20s and it was rough hearing all his friend and how he had touched all their lives but to himself, he felt worthless. It's very easy to trick yourself into thinking you're the worst person alive, that's why it's important to ask for help, talk to people. A lot of have been there too but recovered. His last words was "freedom from fear".

His mom posted this chainletter shit but I think it has a good message:
>Many people think that a suicide attempt is a selfish move because the person just does not care about the people left behind. I can tell you that when a person gets to that point, they truly believe that their loved ones will be much better off with them gone.This is mental illness not selfishness. TRUTH: Depression is a terrible disease and seems relentless. A lot of us have been close to that edge, or dealt with family members in a crisis, and some have lost friends and loved ones. Let's look out for each other and stop sweeping mental illness under the rug. Give a moment of support to all those who have family problems, health struggles, job issues, worries of any kind and just need to know that someone cares. Do it for all of us, for nobody is immune. Thank you!

If you're having problems with depression: First see doctor, there could be a chemical imbalance that can only be treated by medicine. Any and all health professionals will help and take it seriously if you tell them you sometimes have trouble with depression.

Failing that here are a little of some small things you can try on your own to help get in a better position.
http://www.littlethings.com/natural-ways-to-treat-depression/

If you're having problems with drugs or alcohol check out your local AA or NA. There are more people out there with the same problem going through similar things. And I got to hang out with a lot of them after the funeral and they're awesome people.