The attitude, 'you can win if you want to badly enough,' means that the will to win is constant. No amount of punishment, no amount of effort, no condition is too 'tough' to take in order to win. Such an attitude can be developed only if winning is closely tied to the practitioner's ideals and dreams.
There is no such thing as maturity. There is instead an ever-evolving process of maturing. Because when there is a maturity, there is a conclusion and a cessation. Thats the end. Thats when the coffin is closed. You might be deteriorating physically in the long process of aging, but your personal process of daily discovery is ongoing. You continue to learn more and more about yourself every day.