"God, grant me the serenity to accept the things I cannot change, courage to change the things I can, and wisdom to know the difference." Setting aside the God part, the balance of the prayer maps beautifully onto the three trainings of morality, concentration, and wisdom, albeit in a different order:

Courage and change are about action in the world, morality.

Serenity and acceptance correspond to concentration.

Wisdom is all but synonymous with insight.