In addition to a sense of global responsibility, Ann Soetoro, Barack Obama’s mother recognized the importance of manners. Did his manners propel him to the presidency? Certainly not. Yet, without them, acquiring his current job would have been impossible.

This behavioral bias is tougher to combat than you might think. Everywhere you go, savvy marketers are creating a “buy” environment, with lovely merchandising and seemingly compelling offers. The best way to combat this one is to be extremely rational when making decisions.