After losing in his first four grand slam finals, Murray beat Djokovic to claim the US Open in September last year.
No player in the Open era has won their second grand slam immediately after their first, but Murray is confident that he can produce his best tennis when it matters most.
"I think I started to play better tennis and played at my optimum level more in the big matches over the last year or so, which hasn't always been the case," Murray said. "That's what has changed for me."
The British number one added that he is in no doubt about the size of the task he faces. "[Djokovic] is the world number one, he was in the US Open final, the French Open final, Wimbledon semis and he's in the final here. And he's playing extremely well."
Murray faces Djokovic at 8.30am tomorrow morning.