Originally Answered: How do you get out of a mental depression?
Many musicians I know don't understand 'sheet music' but, rather- work by ear. Each to their own. As you keep learning and studying different music types, you will eventually learn these things.
Basic musical theory isn't overly difficult... there are several scales to learn, but once you practise them over and over (it will take some time!) you will know them for life and they will be an instant guide for you to find the "7" in "B7", etc. Its basically a B chord with the seventh note in the scale added. Take a theory class or study online and you will be able to pick it up, it's frustrating... but it will bring great satisfaction at the end of the day.
As for your depression:
I have long-suffered major depression and recently had a very dark time. I thought nothing in the world could help me- the world was just this giant black chasm: I didnt want to get out of bed, didnt want to eat, didnt want anyone to get attached to me, so that I could disappear into the oblivion and they wouldn't even notice.
I tentatively tried antidepressants, for probably the millionth time in my life... immediately, I went on Fluvoxamine- but stopped abruptly after 3.5 weeks because I freaked-out about the weight I was gaining... for the week after I stopped taking them, I thought I would die... I really, honestly thought that nothing was ever going to work... if it hadn''t already been black and devastating... as my body withdrew from the drugs (even though they didnt help my mind-state), my emotions took a severe turn downhill.
Unhopefully, I started back on Citalopram... and I am utterly, beyond amazed that they have made such a significant difference in such a short time... I feel like I can breathe again... and waking up in the morning is still hard... but I actually have the strength to push myself to do it.
Anti-depressants aren't something you can become 'physically dependant' on. They adjust your seratonin and noradrenaline levels to their right place, and after a correct, theraputic period of time- your body should adjust to be able to cope on its own.
Before you were depressed, your brain was producing these chemicals, but in times of great stress or trauma- they can easily be meddeled with.
You may need to be on the anti-depressants for a while, but not your whole life. They are merely a 'corrective' drug- not a quick fix that you take every morning.
I sincerely hope you keep trying with your music- like I said, some of the most brilliant musicians I know work solely by ear.