This document discusses the difference between constructive and destructive competition. It argues that competition brings out the best and worst in people, but does not have to be that way. Constructive competition, like Federer and Nadal pushing each other to improve, is given as a positive example. The document advocates focusing on contribution rather than competition, having an abundance rather than scarcity mentality, and comparing yourself to your past self rather than others. Destructive competition is likened to crabs in a barrel pulling each other down or sabotaging others, while constructive competition sees others as motivators rather than threats.