Midfielder admits it hurts when he is left out of the side
So far, the Arsenal captain has not started a game in South Africa and Vicente Del Bosque is unlikely to make many changes to the side that confidently dispatched Germany in the semi-final.
"I can't deny it has hurt not to be in Spain's starting line-ups throughout this tournament," Fabregas told The Sun.
"But I only have to look at our incredible players - and especially our midfielders - to realise I'm so honoured to be part of this magnificent Spanish side.
"If I'm lucky enough to get a start, I will give everything I have. But if I have to start on the bench, then so be it. All I can pray for is that I get a chance to play some part of this unbelievable game.
"I am desperate to play at least some part in tomorrow's game.
"What player on the planet wouldn't be? It's everything we dream of from the moment we start kicking a ball to the moment we learn all about the world's greatest football tournament.
"Of course I believe I can play a part in making history for our country, which has never won a World Cup before.
"If I'm not in the team, I will know deep down that Spain winning the World Cup is more important than Cesc Fabregas starting the game or not.
"So I will still be 100 per cent behind the boys who do go out there. And I will be thinking about what I will do, what I must do if I come on.
"To just be a part of a World Cup final would be beyond belief, the stuff of dreams. That's why I just can't wait for tomorrow.
"I'm so proud Spain is in the World Cup final, but it means nothing if we don't win it.”