Politeness and humility are excellent qualities. A person who is arrogant, despite being needy cannot achieve his wish. He should adopt humility.
It is narrated that physician Galen was employed by a king. The king was in the habit of eating unhealthy food, and therefore, Galen believed that the king would contract epilepsy. He always tried to stop the king from eating unhealthy food, but the king did not desist.
Galen was frustrated and left for his native town. After some time, symptoms of epilepsy started appearing on the body of the king. The king realized his mistake and adopted humility. He handed his throne to his son and left that place wearing simple clothes and reached Galen. Galen recognized the king and liked his humility. Galen treated the king with the utmost attention, and the Almighty God granted health to the king.
(Malfuzat, Vol. 9, p. 286–287)