A psychologist explains why complaining can make your life and relationships better

We all know someone who responds to "How was your day?" with a string of gripes.

To many of us, that kind of negativity may seem toxic.

But Guy Winch, a licensed psychologist and author of "The Squeaky Wheel: Complaining the Right Way to Get Results, Improve your Relationships, and Enhance Self-Esteem," argues that complaining can actually have a positive effect on your daily life.

But there is a caveat. You have to complain the right way, or the opposite effect will occur.