If you pay close attention, there is an attitude that makes billionaires stand out. It may come out as a surprise, but Warren Buffett once said that the difference between successful people and really successful people is that really successful people say “no” to almost everything.
Repeated complaining rewires your brain to make future complaining more likely. Over time, you find it’s easier to be negative than to be positive, regardless of what’s happening around you. Complaining becomes your default behavior, which changes how people perceive you.