It's good to be humble.
Hal is competing in triathalon.
Hal wants everyone to know his accomplishments.
Hal tells everyone that he gave his best effort in the triathlon.
Hal brags to everyone about coming in first in the triathalon.
Hal is looked at favorably by his peers for not being braggadocios about winning first place.
Hal loses respect from people for being a braggart.