How else has this? I sometimes remember dreams from easily 15y - 20y ago absolutly vividly, although I have had forgotten them in the mean time. Suddenly, during the day, like in a split second (maybe triggered from a scene or scent) I feel that "feeling" (or more like a superposition of all impression of that dream i had) of a dream long lost and the dream is fully present in that moment and I kind of "remember" it…
I'm completely the opposite. 50 years old and I have never once in my life remembered a dream. Never. I see things about dreams, such as this like, as interesting, but can relate to them at all, because they are things that happen to other people. I assume I have dreams, but when I wake up, I never have any recall of them.
It helps to have enough sleep, not wake up with an alarm, not have anything important to do after waking up. Have a pen and paper next to the bed, to remind you. Think about how you want to remember your dream, as you are falling asleep.