Do your best not to do same mistakes again. 

People are so used to say "sorry", not from their heart deeply, come out with no effort. ~ Sammi Yuen 

There's also no such thing as " I'm sorry but". Either you're sorry or you're not. ~ Dejournett Hatfield 

Forgiveness is overrate. I'm sorry is sometimes used as an excuse. ~ Valerie Simmons 

Actions speak louder than words. Anyone is capable of saying anything, but not everybody can act upon what they say. ~ Michelle Ramos 

Don't make kids say sorry if they don't know why they're saying it. ~ Nancy Peterson 

To make the same mistake more that once is bad.