How to write dialogue (rather, how I write dialogue)

Writing dialogue or conversations in general has always been easier for me than writing prose. While I love prose, especially that of Jane Austen or of Betty Smith, there is nothing quite like hearing characters be themselves. I seem to write much, but many people ask me how I do it. I really have only one "secret" for this:

Listen.

Listen to everyone and everything. Listen for colloquialisms, mannerisms, inflections, etc. Some of the best conversations I have ever heard came from two people ye...