I don't know where to start, but from my experience, I just want to share the feelings that everyone faces in their life.
see sometimes someone feels bad when anyone hurts by them they feel that they did a mistake that cant is erased even though that has happened accidentally. let me take an example: There is a beautiful family having one daughter named Harika. She completed BTech and got a job, as usual, their parents started seeing matches for her, but she is already in love with someone but she didn't tell her father. Her father has a friend named "Ram" they are best friends since his childhood. One day Harika came to ram and asked him to convince her father to marry with her loved one but her father has already fixed a marriage with someone. To convince her father ram and Harika are going in a car to function hall they are seen by their village people while going after a few minutes unfortunately accident has happened.. Harika has died and ram alive after then he went to function hall and there his friend is angered on her that he is the reason for his daughters death ram don't understand what he is saying after then he understood that village people have spread the rumours that when he is taking Harika to somewhere and accident takes place because of him. Without any thought, Harika's father believed that rumour blindly.
finally, ram gets hurt very much and left from there that no one believes him, and he went from there with a hope that one-day truth comes out
Here ram has done a mistake which cant be erased even though it happened without his influence.