While in University several decades ago, in abnormal psyche, we talked about a concept called "learned helplessness". Basically if a series of adversive events are presented to an organism, serially, the animal/organism will just give up. Sort of like the orphans who experience a syndrome of "failure to thrive". After the pain takes so much away, the uncertainty of whether you'll be functional the next day, and at what cost, becomes real, and dashes hope. This is the part where we are supposed to reach down, grab the bootstraps, and pull like ----. Well, sometimes I just don't have the strength to keep it up.
I have hurt so badly, after a days work, I could not make food. I couldn't get to the kitchen, much less to bed. I would hurt so bad all over heck, it hurt to think. How in the name of samuel adams was I to get up and do it all over the next day, and perhaps the next. I got so I couldn't do it anymore. I contemplate getting back to work, but I can't seem to be able to figure out what I can do where people won't expect me, when they expect me.