Years ago, I worked for a company contracted to help injured workers in chronic pain recover and re-enter the workplace. Most had been injured on the job, even with all the safety precautions.
As part of their rehabilitation and recovery program, they attended a two-week all-day class. Most were not happy to be there; in fact, some were downright hostile. Yet after one week, we began to see a transformation of attitudes, mindset, and way of thinking.
It was always amazing to watch this metamorphous from hopelessness, despondency, and despair to one of possibility, expectation, and motivation.