One of the ways I deal with depression is I sit in it, acknowledge it, lay out what needs to be done (even if it’s something mundane), and start doing it. This “de-personalization” of depression seems to reduce the overwhelming immediacy of it, and gives me some room to remember that my problems really aren’t that bad. Then, eventually, the depression fades, and I find my way back to a state of balance.
I used to rage against it, or flee from it, but those approaches never worked for me and often amplified my problems. I now think of depression as simply another natural state, one that must be acknowledged and handled. And so is happiness, I think. They both come and go, and in the tides of time, I believe they are simply states of being that I must address accordingly. Sometimes, I even glean valuable knowledge from their occurrence and passing.