Most times my dreams are about things I wish to happen or I need, I'm worried about ecc.
For example, Lately I really feel I need to go on vacation, so I keep dreaming of the places I usually used to visit during Summer vacation and all my friends.
Sometimes I have nightmares, other times I see in my sleep my everyday life, and other times I have really weird and crazy dreams that doesn't even make sense.
Dreams can usually be influenced by everyday life, wants or needs, inner desires, or even a movie you might have seen.
Dreams in reality last for only a few seconds, even if you have dreams of a whole lifetime. Someone can remember their dream, if they've seen it a little before waking up and not be woken up by something or someone else.