This is a controversial area in which the answer you get largely depends on who you ask. Some scientists today insist that dreams are merely the random or background noise of the mind during sleep and mean nothing at all. But almost everyone knows from direct experience of their own dreams that at least some of the time dreams are complex and personally meaningful, if often obscure creations. Freudian dream analysis relies upon the dreamer's own connections and associations to his dream to unravel its contents. The meaning, if any of a dream seems to be highly specific for the dreamer.
People often wonder and sometimes ask if they are normal.
The difficulty here is that, strange as it may seem, the mental health professions have never established or concurred in a definition of normalcy. There is reasonable though not complete agreement today concerning various abnormal states of mind and behavior - but any discussion of normalcy itself quickly becomes controversial. A far more productive line of inquiry, therefore, is to ask whether one is happy and healthy, not whether he is normal. Psychiatry is a specialty of medicine like surgery, internal medicine or pediatrics. Psychologists have obtained the Doctor of Philosophy or PhD degree from a university and have not received but have not received the medical training of a physician.