Just alter your breathing while you close your eyes and try NOT to think of anything. You will, at the least, feel more peaceful. the biggest evoker of memories is the sense of smell.
Most dreams are messages from the subconscious mind, which picks up on cues and clues that the conscious mind is in denial of. Basically, I believe that there are FOUR types of dreams: 1. symbolic dreams; 2. dreams that rehash the day’s events; 3. messages from the subconscious that are straight messages and not symbolic, and finally, 4 psychic/premonition dreams or dreams that actually predict coming events.
I have had many psychic dreams. It is a gift. Those who do not or have not had them do not understand the gift.
Very true about the dreams. But if you are hoping for a meditation, you could look around for a “Higher Self” meditation. I believe that our Higher Selves are the same as other people’s beliefs in souls. In my beliefs, the Higher Self actually holds the memories of this life as well as our past lives. With the right meditation layout, and a little practice, you can relive many memories. WARNING: Not all memories are wonderful, but this can also bring closure to the negative ones. Best wishes. Blessed Be.