Rory McIlroy is to trim his schedule to focus on 2013's four major trophies after a fairytale year in which he won both the U.S. PGA and European Tour money lists to finish on top of the world rankings.

The 23-year-old says a greater understanding of his own game has propelled him to new heights as he gave notice to the game's great and good that he could dominate the sport for years to come.

McIlroy won five tournaments in 2012, including his second major at the PGA Championship, and finished the season in perfect fashion by claiming the Dubai World Championship crown on Sunday.

After topping the world rankings for the first time in his career in March, McIlroy's form has seen him firmly entrenched as the game's best player, and he told CNN that is in part down to greater self assurance.

"I know myself more, way better as a golfer, and what what works for me," he told Living Golf anchor Shane O'Donoghue.

"Some things that I tried to incorporate into my game didn't work for me and I think you've just got to find your way a little bit.

"I guess over the last couple of years I've done that and winning big tournaments and winning majors, you grow in confidence and it gives you belief, belief that you are doing the right things."

McIlroy's performances on both sides of the pond ensured he emulated world No. 2 Luke Donald, who last year became the first man ever to top both the PGA Tour and European Tour money lists.

And despite winning the Honda Classic, the BMW Championship, the Deutsche Bank and Dubai titles it is the major tournaments that remain McIlroy's main target.

To give himself the best possible chance to launch his charge at the quadruple in 2013, he's taking his lead from one of the game's all time greats -- his rival and friend, 14-time major winner Tiger Woods.

"I'm gonna cut my schedule back a little bit next year and try and peak four times a year for the big tournaments," he explained.

"I think it's something that Tiger has done so well over the years and probably why he's been so successful.

"So I'm going to try and take a little bit of a leaf out of his book and cut down on the schedule and make sure I'm fresh for every tournament I play.

"I'm really looking forward to 2013 already, even though this year has just ended. I'm looking forward to preparing and getting my game in shape for next year."

McIlroy ended his final round in Dubai with five straight birdies to hold off the challenge of European Ryder Cup teammate Justin Rose, who led by two shots at one stage during a course record score of 62.

But, watched by his girlfriend and tennis star Caroline Wozniacki, McIlroy wasn't to be denied a fairytale ending to his season.

"I sort of wrapped up the U.S. money list earlier on in the season and I guess my one big goal after that was to win the Race to Dubai and and win the European money list," he said.

"I finished second in China, third in Singapore and then got the win here. It was a big goal of mine. I wanted to win the Race to Dubai since the start of the year.

"The money list in America wasn't so much a priority, but it was nice to get that too. It's been a great way to finish the year."

McIlroy and Woods have grown close over the course of the year, sitting down together for a special interview on CNN's Living Golf show.