Do you think that if you suffer a life-changing illness or injury, and can no longer do the same things that you love to do, that you no longer remain the same person? Think of examples such as permanent disability in car accidents, and that kind of thing... what do you think?
I have some disabilities, but they're not from an accident.
They're slowly getting worse over the years and I just adapt to deal with it.
But of course, you're talking about a sudden, huge change in somebody's life.
I think some people in that situation may become a different person entirely, but surely it would depend on the person. If they have a real positive mindset in life, they probably wouldn't change that much.
I wouldn't know how I would react to the loss of a limb or something even worse, unless it actually happened to me.
Sorry, my input was kinda useless.