The human personality is a unique and fascinating part of life. The choices someone makes, the people they surround themselves with and even the career they have are all partial reflections of one's personality. Many people often question if their character was preemptively decided by their genetics, or if it is continuously shaped throughout their lives by their experiences. Through a variety of studies, this poster explores the origin and foundation of personality. Most results show that personality is formed through a combination of genetics and our surroundings, with an emphasis on environmental influence.