Argentina were made to suffer before landing their first World Cup title in 36 years, having twice squandered a lead, including in extra-time before edging past defending champions France 4-2 on penalties in the final on Sunday.
"It was a game where we suffered," said Argentina goalkeeper Emiliano Martinez, who saved one penalty in the shootout on Sunday after previously saving two more spot kicks in their quarterfinal against Netherlands.
"Two crappy shots, and they [France] levelled. They give them another penalty, they scored. Thank God later I did my thing, what I dreamed of."
It was a dramatic final with Argentina first squandering a two-goal lead in regular time and then going back in front in extra-time with Lionel Messi's second goal before Kylian Mbappe completed his hat-trick to level 3-3 in the 118th minute with a second penalty that forced the shootout.
"There could not have been a World Cup that I have dreamed of like this. I was calm during the penalties," Martinez said.
For Argentina coach Lionel Scaloni, it was a nail-biting finish to a turbulent tournament and he could not hold back his tears after the final whistle.
"I cannot believe that we have suffered so much in a perfect game. Unbelievable, but this team responds to everything," Scaloni said.
"I am proud of the work they did. It is an exciting group. With the blows we received today, with the draws, this makes you emotional. I want to tell people to enjoy, it's a historic moment for our country."
It was the third world title for Argentina and the first since the late Diego Maradona won the trophy almost single-handedly in 1986.
For Argentina players and captain Messi, who netted twice in the 120 minutes before also scoring in the shootout, it was the biggest title of their careers.
Messi's Argentine team had made the final as recently as 2014, but on that occasion they finished second best to Germany.
"I'll never forget it. We had to suffer but we deserved to win," said Argentina defender Rodrigo De Paul. "We've beaten the last champions, it's a joy I cannot put into words.
"I'm proud of being born in Argentina, and today we are on top of the world."