One of the modern sciences that has gained far fame, great value, and has become important in life, and an excellent place among sciences: Psychology. It is modern because it was not liberated from the shackles of philosophy, which was a burden on it and a branch of it. It is a science that studies the psychological life of man, and for this we find that it is related to everything that a person does. It is not dearer to man and more important to him than his study of himself, hence its importance and the urgent need to learn it. And since psychology is the science that researches yourself and teaches you who you are, you undoubtedly may wonder how you are ignorant of yourself, which is the most closely related thing to you, and your wonder increases.