Is it something called equanimity? I believe so and sometimes I dont believe it exist.
Of course there is, but the average person's mind is seldom stable. The Knowledge of Equanimity About Formations
is a deep stage of insight, which is not far from the Path Knowledge. I think we cannot really appreciate what equanimity is until we can reach at least that stage of insight.
We may thing that we are being equanimous, when in fact we're just being indifferent, or suppressing our emotions.