Where does your sense of self-worth come from?

“If anyone thinks he is something, when he is nothing, he deceives himself” ([Gal] 6:3), This is not an assertion of universal worthlessness: if believers can say that “the Son of God loved me and gave himself for me” (2:20), who could have greater worth? Rather, Paul warns against the arrogance that delights in its own self-appraisal, or in a reputation granted by others that really counts for nothing.—J. M. G. Barclay, Paul and the Gift, 437