One thing is to admit we did one. Another thing is to do all that we can so that we never make that same mistake again.
Some people never make it even to the first step. Should I say many people?
Some are afraid of making mistakes and always wonder if what they do is the right thing. I think it's good to want to do the right thing. I don't think it's good to live in fear.
You cannot savour your life and enjoy what you do if you are constantly afraid of making a mistake. Mistakes belong to life. You need to make mistakes to grow in life. You cannot be perfect and do everything right. We are humans not gods.
And God actually teaches us things through our mistakes. We need to be dependent on Him. So if we never make mistakes or if nothing bad happens to us He will never get to teach us anything, will He?
That's why we need to make mistakes and we should never be afraid of taking chances.