What good does it do to hold a grudge?

This is a story told to me by a college student.
He read the department, want to enter the line after graduation, to pass the subject and technical certification examination.
A subject has a certain standard of identification, the surgeon must look at the examiner's free heart evidence.
One year, none of the school's seniors passed, setting a record annual acceptance rate of zero.
Everyone thought it was very strange, why is this?
After careful investigation, it was found that the examiner who held the power at that time had a grudge against the school.
"Some teachers think that he is because the school wanted to ask him to teach, but it did not matter."
He's got a grudge and pawned all the students in our school..."
He said that after finding something strange, the teachers and students shared the same hatred and protested together, the examiner who reported personal hatred, of course, the end is not very good.

A few years ago, I was invited to work with Mr. A. I happened to remember that Mr. A had also worked with my friend B. I asked him, what was he like?
He's a nice guy, but he always gets revenge."
These four words made me afraid and I thought, what if I should offend him?
Be crowned with "revenge" and "love and dispute" and other righteousness, will not be atmospheric.
Even if you have such a neighbor, you will be very unlucky, and if you cooperate with such a person, you should not watch out for his backstab every day.
Blood feud, if you do not hold a grudge, is no principle;
Small things are also resentful, but also angry (with a school, hate all the students of the school), in addition to small gas, IQ is not high.
That's a thousand killed, two thousand lost.
The biggest disadvantage of holding a grudge is to continue to torture yourself with pain points, and make your personality more and more distorted.
Most people are afraid to take revenge in the open, so they attack in the dark, and before they know it, they turn themselves into a living villain.
Losing a position is the same as losing love, the only way is to think good, as a turn in life: lose a carrot here, maybe tomorrow will get a bag of millet.
Learning to comfort yourself is learning.
It's better to forgive others than to mess with your own personality.