Chronic, long-term, debilitating depression that gets worse between when the leaves start falling, & until they bloom again.(So Major depressive disorder with Seasonal Affective Disorder on top.)
Aside from being from a family of crazies(Bipolar depression, unipolar depression, and schizophrenia.), I have no real idea why I have MDD & SAD, I don't think anything extremely traumatic happened to me as a child.
And I don't think there is any "overcoming" it. There are days when with medication that I can feel happy, that I can feel like going out and doing things. But the vast majority of the time I feel slightly crappy and don't even want to open the curtains.(Without meds I'll only get up to piss on my worst days.) Major depression isn't like situational depression - such as losing your job or whatnot. It's not something that can be fixed as easily as getting a new job.(Though even that's not that easy.)
I'm on medication, prozac, to be specific. In winter I'm on 60mg, in summer months, sometimes, I can go down to 40mg(used to be able to go off entirely.). Though I'm starting to think that I need to switch off from prozac.
While I have been in therapy, I don't think it does s**t. More often than not I don't have enough things to talk about in terms of my mental issues for 30 min to an hour. For people whose depression comes from trauma, it probably does help.
I think my brain is just all levels of ******** up, and that therapy won't help. Might help me learn how to cope with extra depressing crap, but I didn't learn any new coping skills when I went. Doubt I'll learn anything new if I went again.
I also have a bit of social anxiety. I can deal with people, in groups of less than 5.
Anything more than 30 people makes me feel panicky if I don't know a couple people really well.
My husband has a host of issues, but some are hard to tell where his developmental disorder ends and begins. He has high functioning autism, which usually includes obsessive-compulsory actions. His mostly manifests in the use of hand sanitizer and hand washing, germ eradication, basically.(In lesser instances, object placement, he has to have his keyboard, monitor, and mouse at work just so. And anytime it gets moved he becomes extremely agitated.)
He also has severe Major depressive disorder - he hasn't been off of his medication(Save changes.) in 15 years. Right now he's on a high dose of prozac - 80mg. The maximum daily recommended dose for non controlled-release prozac.(controlled release MDRD is I think 90mg.) This keeps him functional - doesn't keep him from being depressed.
Unlike me, he is in therapy, because his depression is a result of trauma, and he had C-PTSD to go with it. He's helped by therapy, unlike myself.