Mental Illness

Cynicism

Becomes unethical

Self-Hatred

Suicidalness

Formation of Tyler Durden

Seeing all his activities as nuisances

Has no concern about others

Starts seeing immoral things as fun

Farting and sneezing in people's food

Kills Marla's Mother just for profit

Prioritizes profit over people's souls

Constantly calculating the ways he might die by in everything he does

On planes

In his daily life

At work

Becomes alright with the idea of self-harm

Fight Club

Allowing Tyler to burn his hand

To give himself someone to live for

To feel better about everything he does as he is not doing it alone

To have someone form Fight Club

Work

Other People (Nearly everyone)

An excuse to form Project Mayhem