The Blues have made an underwhelming start to their title defence and currently sit 10 points behind table-toppers Manchester City.
Mourinho's men have come under constant criticism, although they relieved some of the pressure off their boss with a 2-0 win over Aston Villa on Saturday.
But despite their lacklustre start to the campaign, Mourinho doesn't feel he has a point to prove.
"Of course I’m entitled to [one bad season]," Mourinho told The Irish Times.
"There are guys who have one good season out of 20. Some of them not even one good.
"I’m entitled. I don’t need to prove."
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Jose Mourinho shakes Tim Sherwood's hand after Chelsea beat Aston Villa
GETTY
Jose Mourinho (right) doesn't feel he has anything to prove
Mourinho also believes his success at Chelsea has brought about a sense of envy from those in the game.
"I learn to be happy with the happiness of the others,” he added.
“But I repeat, it’s a moment. It’s not a moment that will last for a long time."
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