It’s obviously easier said than done. Sometimes the glass is half empty, sometimes half full, or maybe it spilled completely. Situations, people, stress, and boredom all affect your attitudes and feelings. So why is thinking positively important? How does it help people to deal with problems and to be happier overall?

Different factors play a role in depression. One part of the puzzle involves people’s thinking styles – the ways in which they look at life and explain events and situations, both good and bad. That is, people tend to make sense of the world in ways that can be more optimistic or pessimistic. For example, when someone with a pessimistic thinking style fails a test, she might think something like, “I’m so lame; I always fail.” On the other hand, someone with a more optimistic style might think, “Math is tough for me, but I know I can do better if I study more.”

Some scientists have linked optimism to happiness, good health, and success. This doesn’t mean that people can simply decide to think positively and change their lives overnight – it’s not that simple. But research suggests that thinking styles can be changed and that optimism can help you to deal with problems like depression and benefit areas of your life such as your health, relationships, and schoolwork.

So, how do people, particularly people with depression, learn to think in healthier ways?

One way is through cognitive therapy, a type of therapy that aims to teach people certain cognitive (thinking) skills. These skills help people learn to replace negative or distorted thinking with a healthier, more positive perspective.

A good self-image is another key point. Learning to identify and cultivate your personal strengths – like how funny, creative, or generous you are – is essential.