In a chat with France's Stade 2 about his ranking, Nadal said, "For me it won't be a goal in my career anymore.
"If I have become No. 1 because of the results I have, it's great. But I'm not going to pursue this objective. I will follow my schedule.
"My big goal is to play as many years as possible. What I won't do is put at risk the best years of my career to get the No. 1 spot. It won't be anymore an objective for me.
"My goal is to be happy and I think I am."
Nadal has finished No. 1 three times (2008, 2010, 2013) and has spent 141 weeks on top of the world rankings.
After an injury-plagued 2014, Nadal will be in action in Abu Dhabi on Thursday.