2) “Use their money to benefit others rather than themselves” - Giving is better than receiving:

Dunn, Aknin, and Norton (2008) asked a nationally representative sample of Americans to rate their happiness and to report how much money they spent in a typical month on (1) bills and expenses, (2) gifts for themselves, (3) gifts for others, and (4) donations to charity. The first two categories were summed to create a personal spending composite, and the latter two categories were summed to create a prosocial spending composite. Although personal spending was unrelated to happiness, people who devoted more money to prosocial spending were happier, even after controlling for their income.