My theory is that suppressing something in one aspect of the self increases the pressure across the entire self. As with hydraulics, you cannot compress emotions, needs, fears, and so on: One of the properties of a liquid is that it can't be compressed, so too feelings, emotional needs, and so on. This is how hydraulic systems work: You apply a small amount of pressure in one place to move very heavy things in another place based on the size of the pistons and levers; picture a hand-operated hydraulic jack that can raise a car. So too emotions: If you push (suppress) a lot in one place, it can move you in other places you don't suppress. If there's no outlet for the pressure in a hydraulic system, liquids squirt out from weak spots like gaskets or joints. Similarly, emotions and psychological needs that are being suppressed squirt out in inappropriate places when there's no outlet.