The first thing you must have the talent and gifts to be a champion however hard work and sacrifice is included.
Those who are champions in their field have made sacrifices to be where they are at.
The one mistake some champions make is sacrificing their families. Whatever you do they should never be the sacrifice. In fact, they need to be included in you being a champion and your purpose.
In fact, I go further to say the family is your number one purpose in your life. If you forget that then you really are not a champion after all.