I attended the June rationality camp, and had mixed feelings about it. But I've also attended parts of it (such as sessions to test new units) before and after, and I've seen a significant improvement over time.

For instance, the unit that's called Panic here is one of the best, but hadn't been developed in June. I've attended two versions of it, and the second one was clearly better than the first.

The Comfort Zone Expansion convinced me that I have irrational fears that may cause problems and that I didn't understand well before taking it. But I'm skeptical of the "entertainment guaranteed" - I found the June version unpleasant. They've improved it since then, but I still don't see how it can entertain a group of people with widely varying comfort zones.

It's hard to tell how much benefit I got from it, because the changes are subtle and likely to build slowly as I alter my habits. (Rereading this comment, I see that I've only made a little progress on the "be specific" advice).