Question 093: Treating injuries

I don’t know of any martial art book for those over 40 but I haven’t looked for one. For any age, the best training method to concentrate on performing techniques with perform form. People who concentrate on perfect form improve in all aspects of TKD. Those who concentrate on one thing, such as high kicking, may get better at it, but they do not improve overall. Concentrating on perfection will not yield quick results, but, after a few years, the perfectionist will be a much better martial artist in all aspects of TKD than anyone else in the class.

You are not getting any younger. Instead of trying to be what you could have been when younger, always try to be better than anyone else your age. Along the way you will find, that as a side effect you will be better than many of the younger students.
As I always say to younger opponents, if I beat you, shame on you for being beaten by an old man. If you beat me, shame on you for beating an old man. Either way, it is shame on you—not on me.