Looking on the bright side of life can help you live up to 15 years longer, according to a new study.
Researchers found that people who enjoy simple pleasures, have a sunny disposition and a positive outlook on life are much less likely to have heart attacks and strokes.
Optimists are also 70% more likely to reach the age of 85 compared to grumpy people.
Experts believe it is because they are able to ‘bounce back’ from stress.
Professor Laura Kubzansky, of the Harvard School of Public Health in Boston, said: ‘The research suggests optimistic people may be able to regulate emotions and behaviour more effectively.
The study showed that people with a positive outlook on life and who were optimistic about the future tended to lead healthier lives overall.
They were more likely to exercise, eat a good balanced diet, and get enough sleep.
Lewina Lee, from Boston University, added: ‘This study has strong public health relevance. Optimism may be modifiable using relatively simple techniques or therapies.’