The id is the part of our personality that is driven by our instincts, including Eros and Thanatos. Eros is the life instinct. a driving force that makes us behave in ways which sustain the life and ensures the continuation of the species. This includes our biological needs to satisfy our sexual instincts as well as thirst, hunger, and pain avoidance. Thanatos, on the other hand is a destructive force. Therefore, any form of self-destructive behaviour is an expression of the energy created by the death instinct. The id is present from birth and it is the origin of all behaviour, including aggression. The id is also impulsive