Depression is a difficult companion.  For me it is like having an unwanted and malevolent daemon, sometimes lurking on the periphery of my consciousness, sometimes right up close and tripping me up and sometimes smothering me completely. It can stalk me stealthily for weeks, edging closer and closer, or it can swoop upon me suddenly.
Pruv 6 month programme

It’s amazing how easy it is to delude yourself. I have always thought of myself as a pretty healthy person and was completely taken by surprise when I pitched up in my fifties with a number of nasty little health issues.  Looking back now, there was nothing surprising about it at all, but if I had known earlier what I know now, I would not have been in that position in the first place.