Is your wish actually to create rationalist communities which are emotionally healthy, capable of action, and successful in life so that you can become these things?

Good insight. Yeah, it's so that I can become these things permanently.

People usually do what people around them do. Trying to do something that no one around you does is possible but exhausting, like swimming against the current. On the other hand, doing what people around you do is easy and literally instinctive.

Many people report that their choices of environment are either (a) rational people suffering from akrasia and mildly neurotic, or (b) emotionally healthy and highly active people who often believe obviously stupid ideas, but because of lucky compartmentalization it doesn't ruin their lives. Sometimes they perceive this as a false dilemma: should I try to become more rational, but akratic and neurotic; or should I throw rationality away and become a happy and healthy human?

To me it seems obvious that a third way is possible, but it would be much easier when surrounded by a group of humans who do the same. I mean, to me this is obvious: after a LW meetup, I become much more reasonable and active, but only for a few days, then it wears off. Maybe I am more sensitive to my surroundings than an average person (I do have some evidence for this), but I believe that this effect is universal or close to universal; it's just a question of degree. Humans are a social species, peer pressure and cultural learning exist.

In both the ‘asshole’ and the ‘nice guy’ cases there is a sense in which these people are giving up or altering part of who they are.

I interpret this as "the beginners are doing it wrong".

most people would only be able to relate to a few of the games and would find the others to be largely irrelevant for them.

Yeah, I get it now. We all suffer from all (major) cognitive biases, only to a different degree, but each of us only has a subset of the emotional problems. Yeah, it seems so.