Think faster to be happier?

This article in Scientific American discusses the work of Princeton researchers that found that going faster makes you happier:

think quickly by having them generate as many problem-solving ideas (even bad ones) as possible in 10 minutes, read a series of ideas on a computer screen at a brisk pace or watch an I Love Lucy video clip on fast-forward

That sounds a lot like using a Tachistoscope. Who knew that speed reading could make you happier?