Mistakes, Regret, what do we do?

Let's say we make decision today. 10 years later, we realise it to be a bad decision which brings innumerable bad repercussions.

How would we feel?

Deep regret. We would want to change it, make time go back, we would do anything at all, anything at all, we would want to salvage it.

But, there is nothing we can do about it. The hurt and damage is already done.

What happens?
Hurt, pain, wanting to kill ourselves over it. The feeling of deep hurt, pain, regret, it is just so uncomfortable we just want to kill ourselves or someone over it.

OR

What happens?
We recognise our mistake. We recognise that we were young, impulsive, had a lack of foresight, had a lack of judgement, was naive, was lacking in wisdom, that at the time when we made the decision, it was with all our training in decision making from all of the years of our lives up to that point. It was to the best of our ability, with all the available information! If we could go back in time, without the knowledge of what we would know of the future, with our inmature mind and self, with our lack of wisdom, lack of judgement, lack of foresight, we would make exactly the same decision, there would be no difference at all! It was already to the best of our ability with the circumstances we had then! It couldn't have happened any differently. Even if we knew something more, within the stresses of the circumstances then, we might have done exactly the same thing then!! So how? What could we do? We feel deep regret, like it is tearing us apart. But only feeling regret and doing things like injuring oneself and others is no use and not beneficial to anyone. We need to turn this regret and channel it in a positive way, to help someone, to be of service to somebody, to make things better for people, to make ourselves wiser, to improve our foresight, to improve our judgement, to analyse the problem and make sure that we do not make this mistake again. This regret may never leave us and be with us always. But gradually, over time, we learn to live with it, just like how we live with scars. They are but part and parcel of this life. So do not let it consume your life, do not give it more power to wreck your life than it already has. Life goes on, the sky is still blue, and flowers bloom again, that's life.