The document discusses two main factors that influence personality patterns: hereditary potentials and environmental influences. Hereditary potentials refer to genetic factors determined at conception that affect traits like intelligence and temperament. Environmental influences from significant people in one's environment like family, teachers, and peers shape the development of hereditary potentials by providing opportunities for learning and patterns to follow. The environment one is born into, including factors like family background and social context, strongly moulds personality development by affecting outlook, self-image, goals, and attitudes. Different sources of influence include home, school, media, religion, and occupation, which use techniques like child training methods and identification to shape personality.