Rationality and discipline
Rationality has many aspects. It seems to me that the rationalist community often focuses on the fun bits, such as self-improvement, musings on one's own thought-processes, and speculative theorising (though no doubt there are important exceptions). What then gets a bit lost is that rationality is to a large extent about discipline, restraint, and rigour: things that aren't necessarily fun for most people. This is maybe natural given that the community is at least partly built around an intrinsic interest in rationality - they normally don't provide strong extrinsic incentives (e.g. degrees, money) to students of rationality. Nevertheless, I think a stronger emphasis on these less intrinsically appealing aspects of rationality is important.