Stephen Covey wrote that people with a scarcity mentality have a very difficult time sharing recognition and credit Power or profit. Someone with an abundance mentality has the idea that there's plenty out there and for everyone the rising tide lifts all boats. The psychological effects of scarcity can be seen in many areas, including lonely people who lack companionship because they're too busy to socialize. It forces you to spend a lot of your attention on getting enough resources just getting enough is really different from what Matthew thinks we should do.