By realizing that people have the right who to allow into their lives at all times. I am sorry you are dealing with this. We've all been there before.

sometimes your best and most sincere attempts will fall on deaf ears. but people will be people. we all have our own faults n flaws, some just have really big ones. n just know that by making an attempt to make things right or better, YOU are the one being a good person, no matter what reaction you get back. you tried. and sometimes thats all one can do. some people hold grudges and dont know how to forgive or forget, or dont want to. and thats not your flaw, its theirs. so your karma is clean and you can sleep soundly knowing you have a good soul at trying to make things good, and not bad. i made the mistake of thinking that all people can live up to my expectations and do things the way i would do them or react the way i would react. i was so wrong. people have their own ways created by a lifetime of whatever has gone before. made them who they are. and thats just the way it is, and the way they are. keep your slate clean, and thats the best thing anybody could do. imagine if the whole world lived with a clean slate n clean karma. we'd be living in utopia. but unfortunately, we dont. this is earth. populated by people. utopia is a very loooooooooong way away.