Learn the basics of insight meditation, a much subtler and surer (but slower) technique for gaining clarity than the Fourfold Breath.
Concrete ideas to modify and expand this hack go here. -- Something that scares people off from meditation is the belief that you have to "Completely Empty Your Mind" when meditating. This is a very difficult thing to avoid when we're used to thinking of eight things at once.
Freeform discussion of this hack goes here.
The title of this hack in the book is simply "Meditate". We changed it for the wiki to make it a WikiName?.