You've got to love what you're doing.
If you love it, you can overcome any handicap or the soreness or all the aches and pains, and continue to play for a long, long time.
I have discovered that when we least care to admit it, we feel more confused than thankful, more caught than called, more worried than gracious. In humble moments when we can no longer gloss over the roughness of life, gratitude has a way of pushing out the real soreness of feeling cheated or inadequate to the rugged realities of the world. Gratitude seemed to be a handy response to dodge the tough things for which there are no simple or comforting answers.
For the level of condition that I have now, that was without a doubt the hardest physical thing I have ever done. I never felt a point where I hit the wall. It was really a gradual progression of fatigue and soreness.