I recommend the mental exercise of reminding yourself several times a day that you are not a free citizen of a free society (if you don't already)
Pay attention to every method of control you encounter just to keep yourself in the right headspace.
When you see a "security" camera, flag it as "surveillance" in your mind.
Take note of the "public" spaces that are privatized, the fact that nothing around us belongs to us.
Make little mental notes about the things you notice.