Aggressiveness is an integral part of the essence of every person. It plays a significant role in shaping the personality of children, and no less important than love. Aggressiveness in its positive hypostasis, motivating self-discipline and self-education, contributes to success in different areas of life, but only as long as it remains under human control. The author does not talk about the need to eradicate this feeling in the child, but about ways to mobilize aggressiveness for good purposes, for the benefit of the baby and those around him. For a wide range of readers.