Managing RSD and Metacognition

We want to understand how we are in relation to others and build that skill. One is forgiving yourself for your humanness. We all stumble. I struggle so much with emotional regulation with one of my children. And I wish I had a brain that could be more less reactive when I get feedback from a colleague who isn't included instead of having a little pouting session. The next question, how can I nurture radical self acceptance and encourage it as a daily default?