Leaving the morality aside, I doubt such a lunatic dislocation in the mind could really happen. Second-order rationality implies that at some point, you will think to yourself, “And now, I will irrationally believe that I will win the lottery, in order to make myself happy.” But we do not have such direct control over our beliefs.
We routinely generate a swath of irrational beliefs, spawned e.g. by deep seated biological biases such as “That girl I just met, she is so special, I will love and cherish her forever and ever.” You notice a belief like that makes you happy, then you only do a cursory examination of some worst case boundaries. If you then judge the belief to be mostly harmless, you just do not look at it any closer.
Changing a belief consciously means reflecting on it. Stop the reflecting, and you stop the updating (and keep the happiness).
We routinely generate a swath of irrational beliefs, spawned e.g. by deep seated biological biases such as “That girl I just met, she is so special, I will love and cherish her forever and ever.” You notice a belief like that makes you happy, then you only do a cursory examination of some worst case boundaries. If you then judge the belief to be mostly harmless, you just do not look at it any closer.
Changing a belief consciously means reflecting on it. Stop the reflecting, and you stop the updating (and keep the happiness).