Explian "behave oneself" in English

In oneself with oneself呢? buy oneself/ for oneself / in oneself / to oneself behave 英语翻译：learn by oneself English find oneself in oneself bury in find happiness in oneself in spite of oneself absorb oneself in how to behave in the interview behave in a serious and polite manner HOW TO BEHAVE IN AN INTERVIEW