That’s the view of former Premier League star and current pundit Stan Collymore.
Mourinho has been under pressure at Manchester United this season having guided the Red Devils to an indifferent start.
Mourinho has reportedly fallen out with Paul Pogba at Old Trafford though got the best from his stars in a come-from-behind 3-2 win over Newcastle recently.
The former Chelsea manager has been more sinister in press conferences compared to when he first came to England as the Blues boss in 2004.
And Collymore believes the 55-year-old could do with some time away from football to set his mind straight.
“What has happened with the Portuguese, though, is that working year in, year out for massive clubs has taken its toll on him,” Collymore wrote in his column for the Mirror.
“Don’t forget, he might have had an occasional few months off after getting sacked but he hasn’t had a self-planned sabbatical in the same way Pep Guardiola has or Zinedine Zidane is doing.
“Mourinho has been in the spotlight constantly for more than a decade and, for five-and-a-half of the last eight-and-a-half years, he has been under it at arguably the two biggest clubs in the world in Real Madrid and Manchester United.
“So no wonder he’s frazzled — you can see that’s the case with the way he is responding to criticism.
“When you’re firing on all cylinders you laugh it off and when you’re feeling average you might have a little bite back.
“But if you’re shattered then you let it get to you and you answer back in the way Mourinho has been doing.”
Former Manchester United midfielder Paul Ince believes Mourinho needs to make some adjustments if he’s to survive at Old Trafford.
“He needs to change things,” the former United midfielder said.
“It’s down to the manager to motivate players. I know that because I’ve been a manager myself.
“With other teams, there’s the debate whether you’d take trophies and boring football or playing attractive football and don’t win anything.
“But at United, you have to do both.”