I, too, learned those things mentioned above and would add another. I am not sure of how to state it, but it is a combination of several things already mentioned (teamwork, perserverance, responsibility, etc.). I learned that life is not fair and sometimes, even though you work hard and give all you have, you still can fail! You may not earn the playing time you worked for or your team may not win despite many hours of blood, sweat, and tears. In short, I guess I learned how to "lose" with dignity and pick up the pieces and move on with life without regrets.