I think here of how difficult it can be to make a decision, the agony in wanting to make the right choice, knowing all the while that “right” is impossible. There’s an oft-unspoken effort to avoid regret in that agonizing. But that effort represents a kind of paradox: the anguish exists because regret is inevitable. To live is to regret.
Wisdom arises from foolishness, from errors and wrongs. From regret. Do not let anyone take your regret from you! Do not dishonor it by flinching when it shows its face. It is both what made you who you are, and a tool for weaving a different world.