is that you become aware of the things that you do and that you say when you're speaking, and when you're in different modes of speaking. and once you become aware of a thing, you can turn it over in your head.
the things that have jumped out immediately have largely been negative - I click my tongue, I use the same words over and over again when I want to agree with someone, I make fidget noises with my chair
but! today I realized that the way that I use "so." to preface a piece of information, to focus everyone's attention, said in a particular tone and rhythm is very deliberate, and it's inspired by a paper that I think @bennyfactor wrote a long time ago about the translation of the first word of Beowulf, to introduce that a story is beginning, but that the world has already existed - that this beginning and all other beginnings like it are in media res, by their very nature, and are wonderful and attention-worthy.