Affirmations rarely worked out for me. Challenging deep-seated beliefs through positive affirmations didn't make a dent in making my brain user friendly.

Healing from CPTSD is a complex work, affirmations alone won't work, at least for me. As much as we want to make our brains user friendly, the body needs to heal too. Bessel recommends Yoga classes and stretching as a way to bring more relaxation to your body by making the Para-sympathetic nervous system/sympathetic nervous system work in a more balanced way. I'm just starting with Yoga classes and I think they are an important work too. Pete Walker recommends somatic healing in his book too, but I didn't think yoga could actually helps reducing our chronic stress, but it actually does.

Try to go to Yin warm yoga classes and see if you can benefit from them.