What we are not going to do to you
There are real treatments for the third of those, and this course is not going to attempt any of them on you.
Standing in front of a mirror and describing your body, working through photographs of yourself, deliberately posting an unedited picture or going out differently in order to test what happens, are all exposure treatments. They have evidence behind them. They belong to a trained person who has assessed you and who is in the room, and done alone from an article they commonly go badly, because people either avoid inside the exercise or overshoot into distress they cannot manage.
There is also no food, eating or weight advice anywhere in this course, on purpose, and there never will be.