It's really freeing when you learn that rationality isn't going to be feasible in the long run, not because rationality is this thing that only Truly Enlightened people get the privilege to experience, but because humans are just irrational.

You can know when you're being irrational, and sometimes, it is in big ways. But pretending like that irrationality doesn't exist or can only exist if you're "stupid" only sets you back from growing. Irrationality is part of the human condition - it is impossible to actually be this enlightened person people like to project themselves onto.