Have you read the entire Reductionism sequence? That would be the first step. The other big ones related to your query are How to Actually Change Your Mind (which isn't telling you that you should, just explains the general process of how to evaluate a new idea that might shatter your world view), and Mysterious Answers to Mysterious Questions.

Re-reading would be a good idea after you've read these once.

And of course, the other part of the sequences are good, just not related to what you're looking for.