The phrase "allow himself to do" is correct and usable in written English.
It can be used when discussing permission or the act of giving oneself the freedom to engage in a particular action or behavior.
Example: "He finally decided to allow himself to do what he truly wanted, despite the expectations of others."
Alternatives: "permit himself to do" or "give himself permission to do".
It swiftly became apparent that England's ever-modest hero could not allow himself to do so.
The story of Frank Sinatra's rise and self-invention and the story of his fall and remarkable comeback had the lineaments of the most essential American myths, and their telling, Pete Hamill once argued, required a novelist, "some combination of Balzac and Raymond Chandler," who might "come closer to the elusive truth than an autobiographer as courtly as Sinatra will ever allow himself to do".
The rest of the dinner, I was hell-bent on getting him to eat french fries, drink wine, have dessert and say bad words, things he never seemed to allow himself to do.
"I think that comes once you start realizing that life's going to slow down a little bit and you start smelling the roses and it's OK to say, 'You know what, this is very nice.' He won't allow himself to do it now while he's still playing.
He allowed himself to do things players shouldn't.
He allowed himself to do the whole spectrum — he really wasn't censoring it.
Robin, meanwhile, is doing something he rarely allowed himself to do in his act up to this point: He's speaking as himself, in his natural voice, with no character or accent to hide behind, and his awkwardness is palpable.
Free at last from his campaign and his vote-counting, Vice President Al Gore did something today that he had not allowed himself to do for months: he slept in.
Recognizing that there would be times when he would need local currency, he allowed himself to do peer-to-peer exchanges of bitcoin for cash.
"I was doing it in the public eye". His retreat, he says, simply evolved as he allowed himself to do some real growing in private.
I don't think he's ever allowed himself to do that ever in his life, to dance or learn a song, especially to do that in public....Doing that was such an obstacle to overcome".
