When one see himself/herself in dream during sleeping younger (less than 20 years) than his/her actual life (more than 40), how this relationship can be explored. Thanks for comments.
You might start by visiting the website for the International Association for the Study of Dreams, which provides multiple resources, at http://www.asdreams.org/
Dreams and the Construction of Reality: Symbolic Transformation of the Seen and Unseen in the Egyptian Imagination. Article Dreams and the Construction of Reality Symbolic Transformati...
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A human mind can be divided into 2 parts Conscious and Subconscious:
Conscious mind compute things that you normally see and notice in your day today life.For example, you are aware of your environment, your breathing, or the chair that you are sitting on.
Subconscious mind compute the things you think you didn’t notice but actually did noticed but never paid attention. You can become aware of this information once your direct your attention to it. The subconscious mind stores all of your previous life experiences, your beliefs, your memories, you skills, all situations you've been through and all images you've ever seen.
In addition to conscious and subconscious, there is a third important part, which is the unconscious mind. The unconscious, as Sigmund Freud argues, communicates with the conscious mind through the subconscious providing providing people with meanings to all what they do or act in their daily lives. The unconscious mind, Sigmund Freud argues, communicates via feelings, emotions, dreams, ecstasy and imagination.
This is a big question, but to begin, I think of the dream as a part of "real life" and not something "other". This is more than semantic, it is an attitude one can bring to understanding one's (or another's) dream life. So for a brief beginning of how I would start to explore, I'd wonder about what was happening at the time in life the dreamer saw him/herself. What was going on, what were the challenges, triumphs or disappointments and from this reflection, what major life themes is the dream presenting in the here-and-now for the dreamer to integrate? That's where I would begin.
Freud never used the term "subconscious". Do some colleagues here mix the terms from Freudian concepts of the "unconscious, preconscious, and conscious", to subconscious, which may be used by the French School!?
I agree with Jeffrey Morey on the route to follow. If the dreamer sees himself in the age of 14-21, this corresponds to his/her feminine polarity (as per pansystemology). My approach is new but sprouts from Jung's observations and brain research. The feminine polarity allows one to walk on the path towards individuation.
Concerning the interpretation of dreams, there is a Muslim scholar, mystic and interpreter named Ibn Sirin (or Ibn Sireen) who lived in the 8th century. His book the "interpretation of drams" is considered an early attempt to disclose the symbolic feature of dreams. For example, milk in dream indicates good thing that might happen to the dreamer. You can google his name and see his multiple and interesting contributions to this field.
Keys to dreams is a feature in many traditions. However brain structures which are silenced during dreaming are those associated to our physical, conscious life. Those that are active are associated to the unconscious regulator, dubbed System 1 by many. This means that dreams are utterly individualistic. The dreamer is the key, not general categories that would fit everyone. That being said, some elements of dreams such as the age of the dreamer in the dream, as well as if emotions were felt or not, or small details can reveal a message from the individuality to the persona. In the research that I have developed, and in accordance with French terms, there are two main categories of dreams: those which express the psychological and eventually physical state and those that gives a message - these last one are called songe in French.