All upon earth is based on the Inconscient as it is called, though it is not really inconscient at all, but rather a complete "sub"-conscience, a suppressed or involved consciousness, in which there is everything but nothing is formulated or expressed. The subconscient lies between this Inconscient and the conscious mind, life and body. It contains the potentiality of all the primitive reactions to life which struggle out to the surface from the dull and inert strands of Matter and form by a constant development a slowly evolving and self-formulating consciousness; it contains them not as ideas, perceptions or conscious reactions but as the fluid substance of these things. But also all that is consciously experienced sinks down into the subconscient, not as precise though submerged memories but as obscure yet obstinate impressions of experience, and these can come up at any time as dreams, as mechanical repetitions of past thought, feelings, action, etc., as "complexes" exploding into action and event, etc., etc. The subconscient is the main cause why all things repeat themselves and nothing ever gets changed except in appearance. It is the cause why people say character cannot be changed, the cause also of the constant return of things one hoped to have got rid of for ever. All seeds are there and all Sanskaras of the mind, vital and body, -it is the main support of death and disease and the last fortress (seemingly impregnable) of the Ignorance. All too that is suppressed without being wholly got rid of sinks down there and remains as seed ready to surge up or sprout up at any moment.
The subconscious in us is the extreme border of our secret inner existence where it meets the lnconscient, it is a degree of our being in which the lnconscient struggles into a half consciousness; the surface physical consciousness also, when it sinks back from the waking level and retrogresses towards the Inconscient, retires into this intermediate subconscience. Or, from another view- point, this nether part of us may be described as the ante-chamber of the Inconscient through which its formations rise into our waking or our subliminal being.
The true subconscious ...is the Inconscient vibrating on the borders of consciousness, sending up its motions to be changed into conscious stuff, swallowing into its depths impressions of past experience as seeds of unconscious habit and returning them constantly but often chaotically to the surface consciousness, missioning upwards much futile or perilous stuff of which the origin is obscure to us, in dream, in mechanical repetitions of all kinds, in untraceable impulsions and motives, in mental, vital, physical perturbations and upheavals, in dumb automatic necessities of our obscurest parts of nature.
That part of us which we can strictly call subconscient because it is below the level of mind and conscious life, inferior and obscure, covers the purely physical and vital elements of our constitution of bodily being, unmentalised, unobserved by the mind, uncontrolled by it in their action. It can be held to include the dumb occult consciousness, dynamic but not sensed by us, which operates in the cells and nerves and all the corporeal stuff and adjusts their life process and automatic responses. It covers also those lowest functionings of submerged sense-mind which are more operative in the animal and in plant life; in our evolution we have overpassed the need of any large organised action of this element, but it remains submerged and obscurely at work below our conscious nature.
In our yoga we mean by the subconscient that quite submerged part of our being in which there is no wakingly conscious and coherent thought, will or feeling or organized reaction, but which yet receives obscurely the impressions of an things and stores them up in itself and from it too all sorts of stimuli, of persistent habitual movements, crudely repeated or disguised in strange forms can surge up into dream or into the waking nature. For if these impressions rise up most in dream in an incoherent and disorganized manner, they can also and do rise up into our waking consciousness as a mechanical repetition of old thoughts, old mental, vital and physical habits or an obscure stimulus to sensations, actions, emotions which do not originate in or from our conscious thought or will and are even often opposed to its perceptions, choice or dictates. In the subconscient there is an obscure mind full of obstinate Sanskaras, impressions, associations, fixed notions, habitual reactions formed by our past, an obscure vital full of the seeds of habitual desires, sensations and nervous reactions, a most obscure material which governs much that has to do with the condition of the body. It is largely responsible for our illnesses; chronic or repeated illnesses are indeed mainly due to the subconscient and its obstinate memory and habit of repetition of whatever has impressed itself upon the body-consciousness.
The sub-conscious is the evolutionary basis in us, it is not the whole of our hidden nature, nor is it the whole origin of what we are. But things can rise from the subconscient and take shape in the conscious parts and much of our smaller vital and physical instincts, movements, habits, character-forms has this source.
About the subconscient -it is the submental base of the being and is made up of impressions, instincts, habitual movements that are stored there. Whatever movement is impressed in it, it keeps. If one impresses the right movement in it, it will keep and send up that. That is why it has to be cleared of old movements before there can be a permanent and total change in the nature. When the higher consciousness is once established in the waking parts, it goes down into the subconscient and changes that also, makes a bedrock of itself there also. Then no further trouble from the subconscient will be possible. But even before that one can minimise the trouble by putting the right will and the right habit of reaction in the subconscient parts.
The subconscient is not the whole foundation of the nature; it is only the lower basis of the Ignorance and affects mostly the lower vital and physical exterior consciousness and these again affect the higher parts of the nature. While it is well to see what it is and how it acts, one must not be too preoccupied with this dark side or this apparent aspect of the instrumental being. One should rather regard it as something not oneself, a mask of false nature imposed on the true being by the Ignorance. The true being is the inner with all its vast possibilities of reaching and expressing the Divine and especially the inmost, the soul, the psychic Purusha which is always in its essence pure, divine, turned to all that is good and true and beautiful. The exterior being has to be taken hold of by the inner being and turned into an instrument no longer of the upsurging of the ignorant subconscient Nature, but of the Divine. It is by remembering always that and opening the nature upwards that the Divine Consciousness can be reached and descend from above into the whole inner and outer existence, mental, vital, physical, the subconscient, the subliminal, all that we overtly or secretly are. This should be the main preoccupation. To dwell solely on the subconscient and the aspect of imperfection creates depression and should be avoided. One has to keep a right balance and stress on the positive side most, recognising the other but only to reject and change it. This and a constant faith and reliance on the Mother are what is needed for the transformation to come.
P .S. It is certainly the abrupt and decisive breaking that is the easiest and best way for these things -vital habits.