If one remembers a dream, it is because the mind somehow considers it to be significant. If we enjoy life during the day and everything goes well, then it is possible that we remember very little of our dreams. Dreams are probably always a sign that something is happening, simmering, and fermenting—that something is being processed.
If one is reasonably relaxed, then there will probably be less going on. If one wants to have a better memory in general, there is a blessing for this. We can also strongly resolve to remember our dreams before falling asleep. In the morning, while waking up, we remind ourselves of this and then the experiences come up again.