Mandukya_Upanishad

When you suppress a desire, you become an artificialperson. You are not what you are. And when you go ondoing this for a long time, the suppressed impressionsbecome complexes. These psychological complexes can, attimes, become physical diseases. One may have suchphysical difficulties as stammering, deafness, blindness, lossof appetite, liver trouble, even lameness and similarphysiological disorders because of the action of buriedimpulses, the complexes which have been created within bythe storing in of repression for a long period of time. This,they say, we have been doing for years, and years, together,especially if we are to consider the incarnations that wehave passed through, since many lives. We are a group oftensions, complexes, artificial situations. This is jīvabhāva,all artificiality, all difficulty, tension and suffering. Thissituation produces dreams for purpose of relief throughfulfilment. The subtle desires repressed within manifestthemselves in dream, when the will does not operate. Thedesires cannot all operate in the waking world, because the‘reality’ is there, opposing them from outside. You cannotgo on tom-toming your desires to people. They will opposeyou, censure you and make your life hard in the world. Andthe desires, too, are very intelligent. They know where toexpress themselves, and where not. But in the dream worldthere is no such censure from the reality outside. There is,then, no will and intellect or ratiocination working, andthere is only the instinct operating. You live in aninstinctive world. Your real personality, at least partially,comes out in the dream world.82