Two people suffer the same injury. Years later one has rebuilt a life and the other has not, and the medical charts alone do not explain the gap. Part of what separates them is something researchers can actually measure: the sense of being an active participant in your own recovery instead of a passive victim of it.
What the research shows
Across studies of back injury, chronic pain, and rehabilitation, two things predict better outcomes: self-efficacy, the belief that your own actions can influence your recovery, and an internal sense of control. Their opposite, catastrophizing, the sense that the pain is uncontrollable and can only get worse, predicts worse function and longer disability.
What it is not
This is not “just think positive,” and it is not a way to blame people who do not get better. A serious injury, and the pain and depression that ride along with it, can strip a person’s sense of control away. That erosion is part of the injury, not a character flaw.
The trap
A defense will try to turn this science upside down. If you are coping well, they say you were barely hurt. If you are not, they say you did not try hard enough to get better, and they call it the duty to mitigate. Both readings are dishonest. The truth is that supporting a person’s agency, good treatment, honest expectations, and real support, is part of the care an injured person is owed.
The lesson
Recovery is not only something that happens to a body. It is something a person does, when they are given the tools and the support to do it. Protecting that, and refusing to let it be turned into a weapon, is part of the work.
On self-efficacy and internal locus of control as predictors of rehabilitation outcomes, and pain catastrophizing as a predictor of worse outcomes, see the chronic-pain and rehabilitation literature (for example, PubMed 25328476 on health locus of control and self-efficacy in back-pain rehabilitation). This is general information, not medical or legal advice.