Every one thinks they are good. Even I used to think so. And people are not in telling where we are wrong. If we every did wrong to someone, most probably they get hurt, and they try to keep distance from us.
Rarely we come across people who actually like to tell us what we did wrong. I am lucky to have such friends. They told what I did wrong to them and others.
It is never late to say sorry. If you know something wrong I did, let me know and help me fix myself. You will get a guaranteed gift card worth more than your effort in making me realize.