Happiness and the Tetris Effect

As a rational hedonist I'm always reading articles on how one can improve one's happiness. This one from Life Hacker perhaps draws a few tenuous conclusions from the "Tetris Effect" but trots out some time tested tools for developing a more positive attitude including gratitude lists, acknowledging the positive impact of others, and practicing random acts of kindness.

http://m.lifehacker.com/5982005/rewire-your-brain-for-positivity-and-happiness-using-the-tetris-effect