cripple?

the past couple of days my back's been seizing up and it's been really hard to walk.
and I've been thinking, what if this is permenant?
imagine if all the sport and excercise and fitness that so many people find purpose in was stripped away from me. would I then lose my meaning?
it's comforting to know that my meaning is derived from elsewhere, and that no amount of ill health will affect that.