That question is being addressed by a new field known as positive psychology. Led by psychologist and author Martin Seligman, its aim is to identify qualities that reduce stress and optimize mental health. Those include:

The pleasant life. Most people enjoy the big events in life, such as a family wedding or a long-awaited vacation. But learning to find joy in everyday events such as your first cup of coffee in the morning or a funny comic can make life more pleasant – and help you feel happier.

The engaged life. Did you ever have a workday or a conversation with a close friend where time just seemed to fly by? If so, it’s likely that you were fully engaged in the experience. Being in this “state of flow” can lead to a greater sense of satisfaction.

The meaningful life. Studies suggest that people with a sense of purpose enjoy a greater sense of well-being. What gives meaning to your life? How can you achieve a greater sense of purpose?