O'Sullivan won a fifth World Championship crown against Barry Hawkins with a rousing 18-12 success in Sheffield despite only playing one match this season before arriving at the Crucible.
The Rocket, who has always questioned his own motivation for playing tournaments, refused to confirm he would be back in 2014.
"I can't say that I will be back next year because I enjoyed my year out," he said.
"I'm well equipped to win more titles but it's not easy.
"There were times in this tournament when parts of my game weren't great.
"But, having worked with [sports psychiatrist] Steve Peters for the last two years, I was able to manage my emotions better than I ever have done, which got me through."
O'Sullivan said he was not going to go straight back into retirement but would see how he felt after playing some more tournaments.
"One good thing this tournament has done is get me a wildcard into the Masters," he said.
"In many respects it's given me the chance to rebuild if I want to.
"I intend to play in some smaller events and, come December-January, I'll have a better idea what I want to be doing and whether my heart's still in it.
"I just feel like I've done a job. It hasn't really sunk in. But for me it's been like a dream, Harry Potter stuff."
After losing to O'Sullivan in the decider, Hawkins admitted that his opponent was "by far the best player in the world."
"The way he makes it look so easy is frightening for most players, so I am glad I made a game of it and pushed him a bit," he said.
"I tried my hardest but I just made a few more mistakes than Ronnie and you cannot afford to do that against him.
"It is a shame I lost, but Ronnie is by far the best player in the world."