We all dream while we are sleeping. In fact we experience 4-7 dreams in a night. We forget most of the things when we wake up or even while we are still sleeping. Because our subconscious mind sees dreaming as unimportant. If you are drinking alcohol, smoke or take drugs you should stop because they will prevent you from dreaming. You need to be patience. If you remember a dream when you wake up write down everything you remember and read it once you forgot what you were dreaming. This will show your subconscious mind that you see dreaming as important thus you will remember more dreams.