"fulfill himself" is a grammatically correct phrase and can be used in written English.
It means to satisfy or achieve one's own goals, desires, or potential. Example: He worked hard to fulfill himself in his career, eventually becoming a successful business owner.
When he's merely trying to fulfill himself, well, then it's a party of one.
"But he had to leave, he had to leave domesticity and go to fulfill himself as a writer.
In referring to God he does not imagine an Aristotelian prime mover but a transcendent being who needed humanity to fulfill himself.
"The main issue, which is the security forces, was not mentioned," she added, nor were demands to end of the practice of life-long presidency established by Mr. Assad's father that many fear he intends to fulfill himself.
And, in addition to questioning whether he is helping his congregants, Father John questions whether staying within those boundaries is enough to personally fulfill himself as a priest and provide his own life with meaning.
Describing the film, Robert Rossen said: "My protagonist, Fast Eddie, wants to become a great pool player, but the film is really about the obstacles he encounters in attempting to fulfill himself as a human being.
It is also a question of fulfilling himself as a performer.
For a long time, this movie, too, pulls toward extinction; Noah could be an artist who fulfills himself in destroying his materials and everyone around him.
As in Ibsen's original Peter leads a life driven by allegiance to the idea of fulfilling himself — whoever he may turn out to be.
In this section, when Saleem fulfills himself by traveling with the Muslims, whose philosophies fit with Gen. Mohammad Zia ul-Haq's introduction of Islamic law to the country, "Silent Waters" is reminiscent of Louis Malle's 1974 "Lacombe, Lucien," in which a French farm boy finds meaning in his life when he begins to travel with the Nazis.
And God fulfills himself in many ways, Lest one good custom should corrupt the world".
