I want to say that I usually resist using affirmations unless they seem really true, or hold a kernel of my experiential truth. I recall with my foot pain with each step I would say "I don't need this pain. I am willing to feel my emotions," like a mantra. This felt right to me. I might not actually be willing to feel all my emotions, but I was making a sincere "aim."
So I hope for those, like me, who don't naturally "trust" affirmations ---I think they'll let me down, or I also think they are a sort of non-attunement in that some of the expressions seem to blow right by my experience, ===that there is still a place for carefully worded statements of support, which really resonate personally with us.
"I am free to move forward with love in my heart." is one I like for instance, because it doesn't feel like bullsh*t.
Also
'I let the pain in I can let the pain out'
But these might not feel right for someone else, and in that case I suggest you either use it anyway and trust it will work (the basic instructions for affirmations) or find/ formulate other ones that you can sort of feel in your bones. That is what I do.
You can also experiment with "you are ____," a second person approach. Like "you are a loving person, and I am here with you." or "You are understanding yourself more and more, and this helps reduce pain."
To me, finding what feels right is part of the journey of TMS healing. In no small part because it was "becoming what we think we needed to be" in order to have love --- being a goodist, giving up our needs, striving for perfection ---that gets us into TMS land to begin with. So I encourage folks to attune deeply to their own guidance and needs. Part of self-attunement in the moment.
I've been trying out the affirmations and doing in them in the mirror for a few weeks now.
By the way, I think this is a great practice which deepens self-contact, or exposes ---and therefore clarifies, how we don't want to be in contact with ourselves! Wonderful.