My psychologist and I doing inner child work has been incredibly helpful to forgiving my reactions to my mental ilness. It's okay to get scared or angry because it's just part of you as a human, it's just all about practicing to let it go. It's not about pushing it into a corner to bubble up later, it's about letting it pass through. I wouldn't be angry at my child self if they experienced or did anything I do now and that child is me. I shouldn't be angry at myself. My child self had ocd, they were frightened and confused. My adult self has ocd and through fright and confusion can recognize that fact. A tool that my adult self has that my child self doesn't is knowledge. There is a path out with less pain, it just takes work.