Feeling good can make you healthier, so keep the good vibes flowing! A large review found that positive feelings can reduce the risk of heart attacks and strokes.

In fact, the most optimistic people are about 50 percent less likely to experience a cardiovascular event, compared to people who have a glass half-empty attitude.

Good feelings are healthy because they encourage good habits. People who feel good tend to exercise more, sleep better and eat a better diet—all things that make you look and feel beautiful. So think positive thoughts and see the glass half-full!