I called depression a pseudo-science, meaning people identify as being depressed too easily and there doesn't seem to be any real criteria.
If what The Rock said is depression then I believe 50% of the population have depression which isn't the case, or is it? I believe people can relatively easily backstab themselves. Going from "that didn't work out" to "I suck I want to die" to actually committing suicide is a quick road, I've been there(having constant thoughts about suicide every day for months; losing all desire to live; having 0 feelings). I don't believe that's depression though.
In the US, approximately 20% of the population suffers from depression, so you aren't that far ;)