Tonight I feel content. Unphased. Its a rare feeling, as I'm an anxious, high strung type. I clench when my wife so much as gasps, preparing myself for - whatever. Usually it's nothing worthy of my reaction. But I'm at peace, and I wish I could always be this way. Stoic, not reactionary but calmly but sternly correcting my toddler when necessary, not putting thought or fear or anger or stress into it but naturally. The moment feels right, im in the right place I need to be and i can handle anything that comes my way. But yet I can feel its a fleeting, highly fragile state. Every few months I feel this way, usually after a few beers, on a calm but not necessarily quiet rainy or chilly night. Today completely sober, after a week straight of rain. Its like the emotional equivalent of a "flow" state. Anyone know what im talking about? I only wish to name it and research so I might experience it more often.
I meditate regularly with this app called Headspace, and in its lessons they describe two concepts that seem to be what you're describing. One is this idea of the 'blue sky', which is a metaphor for the blank canvas that your mind can always be: The second is what they call 'quiet confidence', which is the kind of confidence that does not stem from experience or ego but from this blue-sky like inner peace that's hard to describe.