Freud believed we needed to adjust to the reality principle. There are better and worse kinds of adaptations. The bad ones he called neuroses.

Neuroses are the result of faulty negotiations with the pleasure principle.

1. The ID is driven by the pleasure principle.
2. The superego is driven by a desire to follow the rules and do the right social thing.
3. The ego has to accommodate the two.

To understand the dynamics of the three elements, Freud refers to the origins of our neuroses in childhood in distinct phases.

• The oral phase: Dealing with the feelings around ingestion and eating. We might pick up on all kinds of neuroses, such as taking pleasure in refusing food, or overeating.
• The anal phase: Testing the limits of authority.
• The phallic phase ends around age 6. Freud insists that children have sexual feelings and direct them towards their parents. He described the Oedipus complex, where children are predisposed towards "being in love with one parent and hating the other."

In this book, Freud wrote that society can give us many things, but by imposing heavy dictates on us: insisting that we sleep with only a few, imposing the incest taboo, requiring us to put off our immediate desires, demanding that we follow authority, that we work to earn money.

He states that societies function by being neurotic and that it is the reason for wars and other difficulties. 

Freud attempted to invent a treatment for neuroses, namely psychoanalysis. He thought proper analysis could uncover what troubles people and help to adjust reality. 

He analysed a number of key things.

• He looked at people's dreams, which he described as wish fulfilment.
• He looked at revealing slips of the tongues, we know as Freudian slips.
• He said we used jokes to relieve our anxiety about topics like death or marriage.