You may be thinking of Proverbs 27:2 "Let another praise you, and not your own mouth; A stranger, and not your own lips." (NASB)Not quiet sure where I read it , think it maybe in Proverbs , but it is ok to accept complements from strangers or those who know us , but not ok to be complementing ourselves...
When people complement us , could it be because they see Christ in us? just a thought...
...xox...