Regret as Teacher
Regret for past failures is only useful insofar as it informs present practice; dwelling in it is a waste of the only time available — now.
Stoics did not wallow in regret but used it constructively. Acknowledging where one failed virtue yesterday clarifies what needs attention today. Beyond this clarification, regret becomes counterproductive — the past is fixed and dwelling on it squanders present opportunities for virtue.
Every new beginning comes from some other beginning's end.
Stoic practice acknowledges loss honestly while refusing to let grief harden into endless rumination.
Epistulae Morales
Written about in
- What Stoicism says about starting again after a fall
Regret is given exactly one job — telling you what needs attention today. Past that point the Stoics call it waste, because the past is fixed and the hours you spend re-running it are the only hours you had in which to act well.