I find it more helpful to think of depression not as an obstacle to overcome but something to learn to work with. I'm not suggesting that depression is a positive or a benefit, but having lived with depression for the majority of my life, it often feels futile to treat it as a phase.
Instead, I just manage it by coming to terms with it. I accept it as a foundation to my disposition. Something that makes me stronger and harder than the average man. I liken it to broken bones or having calluses. I have stronger bones and I am harder to hurt because I carry with me a greater weight.
Once I accept my condition, I forget, and when I forget then I am sometimes treated with the surprise of having put my weight down. It doesn't happen often and it doesn't happen frequently, but when it does, I can say that in that moment I am happy. If you are like me, there are not many surprises for you in life because you're too smart for that. This would be one of those surprises, at least for me, and that makes it all the more special.