Mind Over Matter
The challenges I am faced with, are not what make me mentally tough; it is how I choose to deal with them, that does.
My longevity in the game of tennis is due to my constantly being at it and persevering through thick and thin. It was a conscious decision to get up, dust myself and move on each time a game or decision did not work in my favor. And believe me, the wins are much sweeter this way too! Because nothing is permanent, I just have to savor the moment, learn my lessons, and move on.
I set higher goals for myself each time I achieve one, and never take my eyes off them. Not the same strategy will work for me each time, and hence the art of reinventing myself is an art I keep mastering.