what causes someone to shift / what's the key to shifting?

I know you can shift without doing methods, but how..how does it work?

you can't say "it's easy, just shift" that's like telling someone to cook without telling them how

other methods consists of people reaffirming and believing that they're already in their DR whilst others you'd need to be in a half awake half asleep state, to trick your mind into easily believing you're already in your DR

but since people say you don't need methods and they're not really necessary, how does one shift without methods?