Neymar believes the next World Cup will be his last for Brazil, as he does not know whether he will be able to "mentally endure" another.
The comments by the 29-year-old striker were made in the documentary Neymar & The Line Of Kings, produced by DAZN. An excerpt was published on the channel's Twitter feed on Sunday.
"I think it (2022) will be my last World Cup," Neymar said. "I am facing it like the last World Cup because I don't know whether I will be able to, mentally, to endure more soccer."
"I will do everything possible to get there very well. I will do all I can to win it with my country and realize my dream, the biggest since my boyhood."
Neymar played in Brazil's 0-0 draw at Colombia on Sunday in a World Cup qualifying match. Brazil leads the 10-team round-robin qualification competition with 28 points after 10 games. Neymar missed last week's 3-1 win at Venezuela because of suspension.