It seems that the part of yourself who judges others does so because they themselves have been judged, and gather resentment towards those who would do such a thing. Where this all starts is the next mystery to be solved.
In terms of interacting with a judgmental person or part of yourself, it seems that they only let down their barriers when you are willing to admit your mistakes and really be humble in front of them. Rather than get pissed at the judgments they throw at you. If you do, a larger and larger fight will brew, and explode, instead. Heck, maybe SOME of the things they say ARE true. To avoid becoming judgmental you must develop, I feel like, the ability to TAKE IT. To take the judgment or criticism, however harsh or mean-spirited. Even if it is designed with the specific intent to crush your spirit.
Restricting emotions and denying your feelings fills a very powerful spirit in you with rage. Ignored, this spirit will start creating nasty thoughts in your head to get your attention – look for the source of those thoughts to find this guy. If, when talking to him, you judge or condemn him because he’s so full of rage, then it will close up to you and stay hostile. If you are fair and look for WHY he’s acting like he is, you’ll see it’s because of injustice within yourself, and that this injustice has been going unchallenged and unrecognized – this probably has to do with why he was repressed and denied in the first place – it’s basically unjust imprisonment.
For me, mine was mad at some of the decision-makers, or rule-makers within my consciousness – they had chosen to imprison him out of fear that his power was not good for the kind of world these cowardly leaders wanted (within myself). He also noted that he relates best, in terms of fictional characters I’ve seen, to the Nine Tailed Fox in Naruto, although he wasn’t that either and didn’t like being described away like that – his spirit was too big and wild for that.
The Nine-tailed Fox, from Naruto
But anyway, as a precaution, I made sure to decide that I would not let any rageful thoughts of his direct my actions, but I would investigate what injustice and fearful restriction resided in me, so hopefully I could make my inner world a much more free, joyful place.