Jason Day, who won the BMW Championship in Chicago on Sunday to become the new world number one, says none of it has sunk in yet.
The 27-year-old Australian replaced Rory McIlroy at the top of the rankings after his final round 69 on Sunday resulted in a six shot victory at Conway Farms.
In a chat with Sky Sports 4, Day said that reaching the top ranking plus his win on Sunday had not quite sunk in yet when questioned on how he felt about the achievement.
"I'm not really thinking about it right now. It doesn't feel real," he told Sky Sports 4.
"Knowing the Shark (Greg Norman) spent 331 weeks up the top of the world ranking list – a very long time – and next week's going to be my first week."
The US PGA Championship winner said that as a child he had always dreamed of becoming the world No. 1.
"I feel good. Just all the work ever since I was a little kid, trying to get to number one in the world and today I did it, which was great.
"To have an opportunity, knowing I had to win this week to gain that spot, and stepping up and doing it, was fantastic."
Day confirmed that he will be part of the field competing at The Tour Championship on Thursday but added that he was going to take two days off to relax.
"I'm going to take Monday and Tuesday off," Day told Sky Sports 4.
"I'm going to go home (to Westerville, Ohio) and then I'll fly down to Atlanta on Tuesday night. Try to get as much rest as possible. The last two days have been very stressful for me.
"Emotionally it's been very up and down inside. I may not show it, but inside I'm going up and down.
"I've got to try to reset everything. After this week, after my celebration tonight, it's done. I've got to get into next week and try to win the FedEx Cup."