Yes, you do have one of those psychobabble things.
Your inner child is selfish, self-centered, greedy, jealous, envious, angry, spiteful, grudge-bearing, hyper-sensitive; feels deprived, entitled, fearful, passive-aggressive, and often destructive. It's a nasty thing and results in misery (for others) in life.
My general advice is to avoid being "in touch with" one's inner child as much as possible. Reaching down and finding one's inner adult is a much better plan.