Research suggests that despite having much more materially than previous generations, the country is no happier than it was half a century ago.

Experts warn that unless we undergo a "radical cultural change", Britain will slide into unprecedented depths of despair blighted by rising rates of suicide and depression.

A group of eminent British thinkers from the worlds of education, economics and politics - backed by the Dalai Lama - yesterday launched a campaign to halt the nation's psychological decline.

Action for Happiness, a mass movement to promote mental wellbeing, calls on people to address 10 key deficiencies in their lives to counter our growing gloom.