You can’t blame your brain. Who’d want to build a temporary bridge every time you need to cross a river? It makes a lot more sense to construct a permanent bridge. So, your neurons grow closer together, and the connections between them become more permanent. Scientists like to describe this process as, “Neurons that fire together, wire together.”
Research shows that most people complain once a minute during a typical conversation. Complaining is tempting because it feels good, but like many other things that are enjoyable — such as smoking or eating a pound of bacon for breakfast — complaining isn’t good for you.