as every "serious dreamer" i write a simple log, a journal of dreams, a dream diary. looking back at it, gives me a glimpse into the nature of my dreams.
almost all dreams i had somehow spilled over into waking life. dream events happening in a twisted or modified version during the day. some prophetic dreams carry much detail, some less.
what i tend to do during the day, is to be alert and watch out for events predicted in my dreams. when dream events reoccur in waking life i get to feel mystical. feeling the mystical power behind everything, seeing the unfolding of energies is really uplifting.
consider all your dreams prophetic. do not think your dreams are about the past, that is not really true.