It has been said that peace of mind is to be sought more than gold itself for it is an unsurpassable riches.
But being deliberately serene, consistently, in the face of most circumstances, is not part of our culture.
In fact, it is considered normal to react and to be very affected by circumstances, on a regular basis. It is accepted that we may stay stuck in a rut if the event was "bad" enough.
It is "human" after all.
And one doesn't want to become detached and cold now