Having suffered an ailment for several months, and having accepted it, it was by pure chance that someone suggested something that addressed the ailment. It reminded me of the times when more serious ailments had afflicted me, like depression, and those moments when finally, I would realize what was causing my irrational and seemingly irresolvable irritation.
As a man, anger has always been my key indicator for depression. It's not the case for all men, but anger is a general sign of depression in men. Whenever I've been worried about being in control, whenever I've demanded it, I've tended to be losing control, and that trajectory is a downward spiral.
Yet, the moment of losing my mind in an outburst of surly behavior has often been the catalyst in identifying I was sliding into depression. It's like, 'Wow, where did that come from?'