I've read his book so I'm gonna be generous and say Peterson has a worldview that presents a dialectic between order and chaos, and those broadly refer to stable structured happiness and cruel cosmic indifference. The core of what he believes is about creating one's own little bubble of security within a frightening disorderly universe. That dialectic resolves in the creation of a paradise inside of your own mind, stuff like self-confidence and your own personal identity.

Problems there are Peterson is absolutely wild about what he regards as representative of order and chaos. Men are order, women are chaos. People of your own country are orderly, foreigners are chaos. He says that kind of thing directly. From the Zizek debate, Peterson mentioned frequently that the Marxist concept of reality "denies nature." Because Peterson believes all of reality is hostile and only an ordered, structured conscious mind can carve out safety from it. In his words, Marxism places blame for individual problems solely on class, whereas Peterson would say all of nature is chaotic and is more causal for individual suffering than any particular economic structure.

I'm not well read on clinical psychology much, but I've heard from his peers that he's pretty normal when it comes to the generalities of the field. So he'll often hide his weird shit among very standard, practical psychological advice like cleaning your room or making schedules. So people who actually do need basic life advice will fall for the rest of his rabbithole, thinking it's all part of the same thing. Basically Peterson peddles idealistic horseshit that is banal and obvious when it's correct, and drug fueled bigoted gibberish when it's wrong.