A girl was being treated for several months for anemia but without any
success. So her doctor decided to send her to a sanatorium faraway.
The first thing she got there, she underwent a thorough physical
examination. And the examining doctor found her blood count to be completely
normal. The referring doctor double-checked it and could not believe his
eyes. So he called in the girl and asked her, “Has anything out of the
ordinary happened in your life since your last visit? “Yes,” she admitted.
“Suddenly I was able to forgive someone against whom I had borne a nasty
grudge all my life. At that moment, I felt completely changed inside.”
So now the doctor knew the answer. Her mental attitude had changed, and the
very state of her blood had changed with it.
Being angry at someone can be stupid, because the other person might not
even be aware of it. So, the only one being harmed is our self.