The smell of new-mown grass on a spring morning, perhaps; or the laughter of your children. Maybe it is watching an England winger running 80 yards to score a try against Australia at Twickenham, or the thought of winning the lottery.
For many of us happiness is spiritual, individual, difficult to define and ephemeral. A Buddhist monk with no possessions beyond his clothes and an alms bowl might consider himself happier than a City financier with homes on three continents. For people afflicted with mental or physical health problems, happiness may be unattainable. Then there are the Victor Meldrews among us who are never happier than when they have something to grumble about….read more http://www.telegraph.co.uk/comment/columnists/philipjohnston/8136139/How-can-we-measure-happiness.html