I began to be able to heal my young self once I began really making an effort to not shame, blame, judge, should, or hate on myself and any previous versions of myself.
The child inside of me wasn't stubborn, just scared and bewildered.
I wrote down all the labels that came to my head when I'd think of myself as that child, and then began looking at them to see if they were accurate. Most of them weren't, but I had never challenged them before, because that's what I was told.
Then, every time I'd catch myself labeling myself or others with those labels, I'd remind myself they didn't have to be judged that way. I'd find a cognitive challenge and say that in my head.
When my daughter's friend came over for a sleepover, she had a tendency to pick up the drinks/food which stain, then go sit on the few nice pieces of furniture we have. When I asked her to please take it to the kitchen, she accidently bumped the table and spilled it.
She reminds me of me. In the past, if that was me, I'd have hated myself for being clumsy, stupid, annoying, etc. I'd have thought of her in those terms. But instead, what came up to me in my head was "this gal is like I was. Not very aware of her body space, and not reading social cues very well. I can treat her kindly and gently ask her to be more careful, though it's ok that I feel some irritation about it."