Since we don't usually have the choice of drastically changing who we hang out with in a premeditated fashion
If you live in the right place, going to LW meetups is an easy way to surround yourself with people more rational than yourself. In my experience, it's been helpful at reinforcing the behaviors I want to reinforce.
So, I've been thinking. We ought to have a system for rationality. What do I mean?
Well, consider a real-time strategy game like Starcraft II. One of the most important things to do in SC2 is macromanagement: making sure that your resources are all being used sensibly. Now, macromanagement could be learned as a big, long list of tips. Like this: