Stick with the program. You are doing fine. It is baby steps, but if they go in the right direction, you get somewhere!
We had a couple who had work conflicts with the Post sessions. The wife went every week with a video camera and videotaped the sessions. Then they watched them at night at home and did the exercises. She said she got more out of it by seeing the sessions twice.
Don't let the negative voice in your head get too loud. Keep your eyes on the positive, and start doing some of the recommended changes.