If you hate yourself at the end of the typical Thanksgiving dinner, you can do a little planning ahead of time to get a better handle on what you're eating.
This isn't about self-scourging. It's about awareness. Hating yourself after a meal is a really bad situation to be in, and if that happens to you, you should treat that mental state as a serious problem to be solved, no matter how long or how many incremental steps it takes.
And hey enjoy Thanksgiving dinner — that's what it's about!