the bitterness of broken purposes;
the flimsy nature of your best resolves;
the lightning speed with which sin comes between you and your vows;
the wondrous ease with which you pass . . .
from wisdom — to folly;
from thoughts of good — to deeds of evil;
from meekness, humility, and patience — to petulance and pride; from all the virtues of a saint — to all the sinfulness of fallen nature.