Doctors estimate that someone refusing all liquids, depending on factors such as climate and metabolism, could suffer irreversible damage or even die "within five or six days".

BBC: Fears for jailed aid worker

In contrast, entrepreneurs can lose face by insulting someone in public, refusing invitations and gifts or by behaving inappropriately, like losing their temper or crying -- acts that are seen as lack of self-control and weakness.

CNN: Doing business in China: Five tips for success

Refusing to give up on something or someone that holds you stagnant is not an efficient use of your capabilities.

FORBES: Bad Career Advice: Never Give Up