So Haman came in, and the king asked him, “What shall be done for the man whom the king delights to honor?”
Now Haman thought in his heart, “Whom would the king delight to honor more than me?” Esther 6:6

Prov 16:18 – Pride goes before destruction and a haughty spirit before a fall.
CAUTION: do not think so highly of yourself that if you fall it kills you.

The king discovered Mordecai stopped an assassination attempt and never received a reward or honor.
He asked which of his advisors were present and was told Haman stood in the courtyard. Haman was there to see the king about executing Mordecai the Jew.
Much to his surprise, the king asked his advice on how to honor someone properly.
Haman’s pride spoke for him and he elegantly told the king how to honor someone.
However, the man to honor was not Haman but the man Haman despised the most – Mordecai.
To top it off, the king chose Haman to bestow the honor upon Mordecai.
Mordecai went from the top to the bottom in one swift fell.

What does Mordecai have to do irritate Haman? Nothing! Just stand around and do nothing.
I dare say Haman is his own worst enemy. His intense hatred for Mordecai has blinded him to his own blessings, joy, and happiness.
Someone once said holding a grudge against another person is allowing them to live rent-free in your mind.

Please, do not hold a grudge against another person. Let it go and be free from them in your every waking thought.
Pray for them and pray for God to release them from you.