> I wonder how much making being depressed part of your identity prevents you from getting better.

I had the same thought recently when Bikepacking.com posted a short video documentary about two obese women doing long-distance cycling. The women claimed that their goal was to end fat-shaming. Yet maintaining such a heavy weight while engaging in such physically demanding activity is difficult indeed. I therefore got the impression that they had so made being overweight a part of their identities that it was no longer a condition they just happened to be stuck with, rather they were deliberately maintaining it at some half-conscious level.