Is pessimism pointless? Britain has always prided itself on its miserabilist outlook. But some say a sunnier disposition might be what is needed to drag Brits out of a rut.
Gloom kills. Time to cheer up, formula proves

Glossary
Yemen - The poorest country in the Gulf region is in the midst of a humanitarian crisis.
International Poverty Line - The International Poverty Line represents the international equivalent of what $1.90 could buy in the United States of America in 2011.
GDP - Short for Gross Domestic Product, the measure of all the goods and services produced inside a country.
Birmingham - A major city in England. It has a population of more than one million.
Stagnated - Stopped growing.
Serotonin - A chemical messenger believed to boost people's mood.
Despondency - Low spirits due to a lack of hope.
Fatalistic - The idea that all events are due to fate and cannot be changed with action.
Pessimism - Always expecting the worst.