The first tip highlighted by New Scientist magazine is that workers should be sociable - but not too sociable.
People who are sociable, active, stable, hardworking and conscientious tend to be happier, the researchers reported in the journal Psychological Science.
Their requirements were not many, they were very sociable, and full of affection for their children, so much so that each mother considered her own child the most beautiful and clever of them all.
We were very sociable, and there was as much joking and fun as if we had been all of one family circle.
