Affirmations have never really worked that well for me to be honest.
Now I realize it was because it had to give me this insight: you cannot have a new thought if you still are holding onto a contradictory one.
You need to pull out the old one first. Then, you can reinsert the new one.
You have to literally scrub poisonous thoughts from your mind and your heart.
The concept of freeing your mind comes from the idea of getting rid of restricting thoughts that are holding you back. Love is the only cure.
So everything that’s not in the name of love for G-d is holding you back.