Mazuz said:
Depression always passes, it is most definitely temporary no matter how it may feel.
No it doesn't and no it isn't. As usual, it varies from person to person. Most people do get past it, with some combination of drugs, ECT, cognitive or other therapy, change of diet, exercise, or just a bit of time. Some people don't get past it. They endure a lifetime of it, in and out of psych wards, and die old and depressed. Or they kill themselves, which can be preferable to decades of abject suffering. And I must comment on something that someone else said. Depression is NOT a part of life and is NOT something we all have to go through. It is a medical condition affecting a small (but sizable) proportion of the community. Sadness, feeling a bit down, a bit negative, grief for loved ones lost, that is part of life. Not depression.
My advice to string_theory is try whatever treatments are out there. If the first drug doesn't work, try another one. Drugs don't work? Try some therapy. As a last resort, try ECT, it's scary, a bit of a headache, some short-term memory loss, but can work for some people. Before that try changing your diet and exercising regularly. Just keep trying again and again. The odds are that something will work. Much better to go with the odds then kill yourself right away. Staying alive during this time is your way of poking your tongue out at nature while it tries to destroy you.
string_theory, you say: "I have nothing to give to this world." When you suffer from depression, your judgement about yourself is clouded. You see yourself through a black fog. I'm telling you that at this time you should doubt yourself. Your opinions are being manipulated by your depression. Rely on the words of others, people you can trust, like your parents, schoolteachers, doctors. At this time, they know you better than you know yourself.
One more thing: the earlier you get treatment, the better off you'll be.