Generally, inner peace is defined as a low-arousal positive emotional state coupled with a sense of balance or stability (Cherif et al., 2022).
Low-arousal positive states are those calm and relaxed happy feelings that aren’t extreme or exciting. They include feelings of calmness, serenity, tranquility, and contentment, in contrast to feelings like exuberance, ecstasy, or euphoria. Low-arousal positive feelings come from within and may be more authentic, stable, and durable than high-arousal positive feelings (Dambrun et al., 2012).
I think you might be one of those truly mentally healthy people I’ve heard so little about.