Every one of us has a situation where we realize after we have finished speaking that maybe the way we handled the situation could have went differently.  The secret to me is acknowledging the mistake and then owning it.  If we would want an apology, well apologize.  Take responsiblity for that which we have done that we wish we hadn’t.  While it can’t undo the past, it is a step towards reparing any damage we may have done.  We are all only human, and sometimes we speak without thinking or we think without feeling.  Whatever the case may be if we are out of line it is up to us to get things back in line.  Always try to see things through other positions then just your own.  You might be surprised at what you discover.