Which is the Correct Name

Lechvod Harav, I was reading in a sefer that a person has a name from the side of holiness and a name from the side of impurity and depending on how he acts that’s the name he will be fullfilling. Is his Jewish name the name from the side of purity and he has a totally different nam that we don’t know about or is different sides of the same name…. I know that this is a kabbalistic idea but any clarity on it would be appreciated. Thank you. Bechvod rav, Leah