I do this same thing. It's as if the conversation gets stuck on repeat, and keeps replaying over and over in my head. Sometimes this happens with conversations that actually happened, but most of the time it's conversations I have with myself, or conversations I role play in my head between me and whomever I need to speak with.

Funny thing is that I used to do it a lot, and while I never really stopped these "inner conversations" when my T suggested I try to use some positive self talk, the conversations got stronger and more challenging! As if I was arguing with myself!