Rafael Nadal considered quitting the 2019 season in May because of persistent injury issues.
The world No 2 ended his 2018 campaign prematurely with a knee problem sustained at the US Open.
The Spaniard then began to battle back to full fitness but struggled on his favourite clay surface.
Defeats to Fabio Fognini in Monte Carlo and Dominic Thiem in Barcelona drew big questions from Nadal.
But he decided to stick with it and it proved to be the correct decision as he stormed to success at the French Open and won the US Open title on Sunday night.
“It has been unforgettable, emotional two weeks,” Nadal told Eurosport. “Dramatic end.
“Who would have thought it after Monte Carlo and especially the Barcelona first round. Tough times.
“I seriously thought about stopping for a season because when you have injuries every week you do not enjoy yourself.
“I tried to make a change, to go through the suffering, training and appreciating the little things that I needed to do to fight for the things I wanted to.
“I had a great team behind and without their confidence it would have been impossible.”
Meanwhile, Nadal feels all of his setbacks have led him to where he is today.
“Today is the day to enjoy. I did this during all my career,” he added.
“If not, I will not be able to be where I am today with all the injuries that I had, no? I need to adapt my game to my problems and to my goals.
“That’s what I did all my career, just try to improve the things that I need to improve because on the way you lose things that you had.
“When you lose things, you need to add another things to keep being competitive.”