I can’t tink of a single word that captures that concept. That’s no indication there isn’t one. Maybe it’s just that my brain isn’t coughing one up right now. But you can look to other sayings that capture the same thought. In addition to what @WasCy & @anartist offered, and the single words that tpich on it as noted by @syz you can work in other thoughts and proverbs dealing with the same concept. Familiarity breeds contempt touches on why the familiar isn’t appreciated till it is suddenly gone. Then there was the Joni Mitchell song, Big Yellow Taxi. The lyrics of that song go right at the heart of the adage. Then there is mark 6:4 where Jesus says, “A prophet is not without honour, but in his own country, and among his own kin, and in his own house.”
Look for more. Say it multiple ways. Happy writing, but I refuse to write your title for you. Write the essay and the title will flow out of it.