Many people gain their most long-lasting life lessons from negative experience, truly the lightest slap in the cheek outlasts quite extraordinarily any resulting mark or blemish. Years after such acts of unmerited violence the repercussions can still be openly witnessed and identified with great accuracy.
To be shaped by error, misstep, or indeed just plain misfortune is most unfortunate, to allow such circumstances to shape action for an age hence is regrettable and misguided.
