[sharadov]

Entire books and philosophies talk about "retraining the way you think". Not sure, if the author was hiding under a rock, dropped some acid and came with this earth-shattering realization. But ahem, he supposedly has a PHD, so he can get away with it. Most happy people are happy because they have gratitude for the daily things, they don't let negative emotions pull them down and just look at the world with a "glass half-full" view.