Neymar is known for hosting lavish celebrations with big personalities in attendance, inevitably drawing media attention.
"So, who doesn't like to party? Everyone likes to have fun," Neymar said in an interview with French station TF1.
"I know when I can go, I know when I can do it, when I can't.
"Contrary to what people think, that I'm immature, that I don't know what I do."
Neymar, who will turn 29 on Friday and could soon sign a new deal with PSG, was criticised for staging a weeklong New Year's Eve party for a reported 150 people at his seafront mansion in Rio de Janeiro, despite a rise in COVID-19 cases.
He added that he does not believe his social life hinders his performance on the pitch and said he needs to blow off some steam from football.
"I've been in football for several years, " he said. "If you stay 100% with your head focused on just playing football, in my opinion, you end up exploding. It is my time to relax, to be calm. ... I will never stop doing it."
Former Tottenham coach Mauricio Pochettino, who took over as PSG coach on Jan. 2, was asked whether he would give Neymar permission to take part in his sister Rafaella's birthday party in Brazil on March 11, which the player has attended in previous years.
"We will see when the time comes. When I started coaching, I said to myself that I would be inflexible, and I wouldn't let anyone go out," Pochettino said.
"After 12 years of coaching, I've come to realise how important it is to be flexible, and I like to negotiate everything. The new generation likes to give their opinion and to be listened to. You get nothing from imposing things; you have to negotiate."
Since arriving in August 2017 at the Parc des Princes on a world-record €222 million signing from Barcelona, Neymar has won three Ligue 1 titles, to go with two Coupe de France, two Coupe de la Ligue and two Trophee des Champions. He's also finished Champions League runner-up.
Neymar has scored 83 goals in 101 appearances with PSG.