Happiness and food are really highly connected, from the pleasure of cooking and eating to the changes in brain chemistry that food can bring about. Many people are made miserable by food but if we switch that around we can use food to make ourselves happier!
I've just been reading a book called "Guns, Germs and Steel: A short history of everybody for the last 13,000 years" by Jared M Diamond and it's really made me think that happiness has got to be the way forward for the human race.
Just watching panorama about devious ne'er-do-wells screwing money out of the property market and it occurred to me that these people are actively engaged in wrecking society but they don't care because they think it won't affect them. Take the money and run, possibly to Panama. But we're all living in the world together and if civilization breaks down then it breaks down for everybody.