I for one believe this is very real. I often find myself struggling for motivation. It would be all too easy to dismiss this as simple laziness, except that by nature I tend to be a Type A over-achiever (or at least try to). I got excellent grades in school, have a black belt in karate, and started and run my own business.

The accident changed me. I must frequently overcome strong inertia to get anything done. I have a theory that this phenomenon is a basic stage of Chronic Fatigue Syndrome. The emotions get worked on before the physical body does. CFS is the immune system ordering the body to cease activity. This is a good thing when the body is ill, in that it mandates rest. It is a bad thing when it happens all the time.

If you blow past the emotional signals through discipline, the I.S. responds with more physical signals to slow down, e.g. pain, fatigue, headaches. These are harder to dismiss. But you get the idea. The important thing to realize is that this is not your fault. It's a brain thing.