Even if you are weak, they are other things relating to what you love that you can still do... Let's use ZIDANE as an example..

He was and he is still a lover of football and a very good player, he played very well in his day's and when he is aged, he quit playing and started coaching..

He has that passion for football, mostly I will refer to African players..

they give up early in football, when they are aged they go back home and start spending all they have earned, though some still do businesses and also investments but majority do nothing....