Dreams are a way for your subconscious to release any pent up worries or frustrations, and for you to visualize your goals and objectives in life. Everyone dreams, even if these subconscious movies are not remembered when you wake up. Dreams are different from nightmares because dreams are typically pleasant while nightmares are terrifying or disturbing in some way.
We don't have an eternity to realize our dreams, only the time we are here
I have had dreams, and I have had nightmares. I overcame the nightmares because of my dream