Hopefully someone else will come along and edit the rest.
We have all been in a position where we have seen some of our friends do something bad, and where we have had to decide something, and yet whatever we did had us feeling bad about it.
Each day we make decisions that affect us or our friends. Many of the decisions are hard to make and you often may find yourself sitting and thinking, "What is the correct choice? What should I do?"
Many have read the novel Of Mice and Men, wherein a guy called Lennie gets shot by his best friend George. At that moment in time, George had a hard choice to make, and he felt that killing his best friend was the right thing to do. He did what he thought was best. George knew that Lennie did not really mean what he did, and he knew that.
We are only human; we will all make mistakes sometimes that change our lives. This is just how it is, and we can't really stop this from happening.
Imagine that you graduate from school and get a top position in a big company. One day your boss tells you to fire an employee because he is not doing his job well. How would you feel? What would you do?