Dr. Laurie Santos is an expert on the science of happiness and the ways in which our minds lie to us about what makes us happy. Her Yale course, “Psychology and the Good Life,” teaches students how the science of psychology can provide important hints about how to make wiser choices and live a life that’s happier and more fulfilling.

In TODAY.com’s Expert Tip of the Day, a psychologist reveals the biggest mistake people make when practicing gratitude and how to fix it to boost happiness.

Yale’s resident well-being expert talks about what it means to live a good life and shares some books that might help us get within reach of one.

It all begins with an idea.

It all begins with an idea.

It all begins with an idea.