Novak Djokovic admits he had concerns about breaking the dominance of Roger Federer and Rafael Nadal.
“Obviously it's a process of self-belief and working on yourself and your game to getting on that level that enables you to challenge the best players in the world,” Djokovic admitted.
“The dominance of Nadal and Federer was tremendous, especially in this period when I was breaking through and trying to, you know, challenge them for major titles.
“Of course it does play with your mind. Of course, when you see somebody so dominant and so successful, you know, you wonder whether or not you have the chance.
“So I think many matches have been won by top players already before going out on the court.
“I think mentally, you know, having that advantage and knowing, you know, who you are and what you represent and making sure that the opponent feels your presence, it's all part of the game.
“Of course all the success that I have had plays in my favour in many matches, but it's not a guarantee.
“Of course you have to do your job because, on the other hand, you have 90 per cent of the matches you play on players don't have anything to lose against you.
“They will come out firing and trying to do their best. That's where you've got to react.”
Djokovic will be in action at the Rolex Paris Masters next week - a tournament he has won four times in his career.