These are facts of life. It's part of our human nature. But what makes us human is the fact we can realise the error we made. Acknowledging our fault leads us to apologies. Even if it's towards people we have or do not wish to have contact with for certain reasons.
This is the hardest part for many, admitting the fault and apologizing to such a person.
The more we do the more mistakes we can make. From our errors we learn, we learn only once we've acknowledge our errors.
We can have the best of intentions and still go wrong.
To err is human, stay human when in error.