This is somewhat connected to the previous private post.
A friend of mine, thanks Anto, showed me this: https://www.ted.com/talks/kathryn_schulz_don_t_regret_regret?referrer=playlist-talks_to_get_you_through_your.
Quote: If we have goals and dream, and we want to our best. And if we love people we don’t want to hurt them, or lose them, we should feel pain when things go wrong. The point is not to live without any regrets. The point is not to hate ourselves for having them […] Regret doesn’t remind us that we did badly, it reminds us that we can do better. For the next time.