The purpose of dream therapy in history was mainly healing. The Egyptians had dream temples called healing palaces. Where dream analysis was used to work out what treatments people needed.
The first material depicting dreams were found in Mesopotamia and date back over 5,000 years. They were clay tablet fragmented writing over 25,000 from King Ashurbanipal's library.
In Islam, dreams are understand as an occasion offering a portal to the devine will. Dreams have a special authority as they are believed to communicate truth from the supernatural world. In many cultures, dreams are believed to be predictions about the future.
Freud himself, believed dreams represented a disguised fulfilment of a repressed wish. He stated, that studying dreams provided the easiest road to understanding the unconscious activities of the human mind.
Every human being, whether they remember them or not has at least 2 to 3 dreams per night if they had the recommended 6-8 hours sleep. Therefore, all the answer they need lie within them.
Due to daily bombardment of distractions, social media and "life stuff", we don't get time to connect the dots in our life and very often overlook what or subconscious is trying to tell us.
Hippocrates wrote a collection of texts on dreams. He believed the soul is passive and the sense organs of the physical body were predominant during the day. During sleep, the soul produces images instead of receiving them. He believed in diagnostic dreaming, prophetic dreams and psychologically revealing dreams. What kind of dreamer are you?