We must learn to accept the fact that mistakes are bound to happen , because that is the first step in conquering the fear of making them.
I think there is no mistake that cannot be mended by accepting it. Saying a simple sorry to whatever/whoever might have been affected by it.
Don’t give excuses for your mistakes – however well-thought out and planned the excuse may be. Excuses show that you want to shift blames and deny making the mistake. The easiest way to confirm if YOU really are to blame for a mistake – ask yourself, do you feel the need to immediately deny it when confronted by someone? If yes, then it means you are to be blamed partly for it atleast, if not entirely.