@Ms Spock when I first started on self compassion it took small steps, at those times when I was in self attack mode and was unable to be self compassionate it was simply enough to tell my self to stop the attack. Learning to treat my self as I would my best friend or my child. If I wouldn't treat friend like that, then I wouldn't treat myself like that.
What really helped me was to recognize that I had internalized my mother, it was a form of self protection which from an early age kept me from suffering even more attacks, if I was bad, unworthy etc, then I didn't have the right to express the anger and outrage I felt, and because previous history had taught me it was unsafe to do so. When I realized why I believed all these false beliefs about myself, it became so much easier to recognize what I was doing was unkind and actually hurting myself, and to approach myself in a more caring and self compassionate way.
If my child were sad, crying and hurt or felt bad would I not reach out and comfort him. Originally I found the best way for me was to journal to the child me, using dominant and non-dominant hands as I had trouble expressing emotions, and for me it felt a little removed, which made it easier to be caring and self compassionate.
Over time it has grown as I have grown within myself. I think for those of us who have been abused since a very young child this will be a very slow process, because it is undoing a life time of habits.
For me practising self compassion was what made the difference, it allowed me to move from avoiding my trauma towards processing it. It gave me the support that I was missing from my life, and helped me to ask for support from those around me. There is a big difference between self pity and self compassion.