We all fight. Every single person on this planet is a fighter. Whether you're battling an opponent in the ring or on the mat; or battling that urge to hit the snooze button one more time...you're a fighter...you just might not see yourself that way.
Think about it: what do you have...what have you accomplished without sacrifice? I try to remind myself and anyone within earshot that "nothing worth having comes easy and anything that comes easy ain't worth having".
So, what do you want? Do you want it bad enough to sacrifice for it? Are you willing to give up sleep, food, the praise of others in order to get what you want? See, it's all a game. Life is one big fight game and the sooner you realize that you've got to sacrifice, the sooner you'll start notching W's in your win column.
Get after it.