- eating meat and dairy (mostly... I just don't want to contribute to the animal cruelty/factory farming epidemic. I'll still eat fresh caught fish and free-range meat)
- using Facebook, Google, and other stuff that contributes to the surveillance state.
- using non-open source stuff. Starts with transitioning to Linux.
- purchasing stuff that supports IP law or DRM.
- using "herbal supplements" that support violent drug cartels. Still fine with anything produced by other means.
The hardest part is building a habit of not doing stuff that you've been trained to do since birth, such as changing your diet to vegetarian. Decided to use a spreadsheet to keep track. I may still forget and screw it up, but at least every day I have to remind myself whether I did it right or not, which slowly reinforces the correct habits. Has been working pretty well so far.