Hypnosis, hypnotic suggestion and the subconscious mind, how do they work together to bring about change in a person's mind, body and spirit?  Basically, the subconscious mind works like the mind of a very young child.  A child , of say 3 years of age, has not yet developed the ability to think logically and reason things out.  The subconscious is subjective and believes what you tell it, as a child of 3 would, provided the logical (conscious) part of your mind does not interfere.  Hypnotherapists call this logical conscious mind the "Critical Factor".   As adults, in a manner of speaking, everything that you see,  hear, touch, smell, and taste first passes through the logical conscious mind before it reaches the subconscious.  The subconscious will only accept what the 5 senses detect as valid if the the logical conscious  mind says it is valid.  Once the logical mind says "Yes, this is valid." then the information is stored in the subconscious mind and that programming keeps running until it (the subconscious mind) is told something differently.  When a person is in a relaxed state of mind and body, as is the case when a person is hypnotized, the logical conscious mind (critical factor) can be bypassed allowing ideas and suggestions to go directly to the subconscious mind thus planting the seeds for change.   Still, the suggestions given to person in a state of hypnosis must be in accordance with what the person truly desires for themselves, morally, spiritually, physically, mentally, etc.  or else the suggestions will not take hold and will have no affect whatsoever.  If the hypnotized person finds the suggestion that is given to them appealing in every way, then that suggestion will have an affect on how and what the person thinks, feels and experiences once they are fully alerted and returned to a normal waking state of consciousness.  This, of course, is a very simplified explanation, however, it will give you some idea of the hypnotic process and how it works on the subconscious mind to bring about physical, mental and emotional change in a person who truly desires change.