This is true sovereignty right here.

Controlling one’s reactions/emotions and thereby choosing one’s responses.

Inspired me to look up the Serenity prayer, and I see it was first published as a prayer by Winnifred Crane Wygal in the Santa Cruz Sentinel in 1933:

God, grant me the serenity to accept the things I cannot change,

Courage to change the things I can,

And the wisdom to know the difference