One thing we have to learn is how to act with responsibility but without the pressure. So you are doing your best but doing your best is done in a relaxed way, not with tension, not with stress. This is one thing we need to learn. And then when you do your best and still you have made a mistake, then you can be very clear and honest in your own mind: I did my best, but my best was not good enough for the other person, so what can I do? At least it makes your mind very clear, it makes your conscience very clear, so that it will not give rise to any inner conflicts.
This is all we can try to do; and when we have tried, if it succeeds, it is good. If it fails, it is also good. And then in such a situation, if you have made a mistake and then some problem arises, what is also important for us to learn is that when a wound has been created, to heal that wound as quickly as possible rather than just hold onto the wound and suffer for your whole life because you have made some mistakes.