Mind your mind; guard it resolutely. Since it is the mind that confuses the mind, don’t let your mind give in to your mind.
Nobody wants to believe the economics textbooks anymore, but since we don’t have anything else, there is nothing else to believe in. But there can’t be an ideological vacuum, which means we always have to swap one belief for another. And we reluctantly believe capitalism, not so much because it functions or has been proven to work, but because there is nothing else out there.