I once dislocated my knee joint, sideways, when I feel down. I thought, in the sheer about of pain I felt then, that I'd be crippled, but I managed to force it back into the joint, and then needed to week to recover and walk normally again.
Also, I was in a car crash with my parents, when my dad pulled the car out from the car park to fast, and we were impacted on the side of the car, totalling it. I can say by experience that your life does kind of flash before your eyes, but afterward I somehow managed to pull myself together enough to get out of the car, get my parents out, who were in hysterics, and push the car off the road.