How can a Muslim rid himself of feelings of jealousy and arrogance towards his Muslim brethren, and the desire to surpass them, which prevents him from loving for them what he loves for himself?

A Muslim should love for his brother what he loves for himself, and dislike for him what he dislikes for himself. He should wish good for others without wishing for the disappearance of blessings from them; that is ghibta (envy in a positive sense, emulation) not hasad (malicious envy). To overcome hasad, a Muslim strives to purify his heart towards his brothers, and remembers the words of Allah Almighty: "That is the favor of Allah, He bestows it upon whom He wills" [Quran 5:54], and "Is it they who apportion the mercy of your Lord? It is We who have apportioned among them their livelihood in the life of this world and have raised some of them above others in degrees [of rank] that they may make use of one another for service" [Quran 43:32]. Hasad is a dangerous disease, and the Prophet, peace and blessings be upon him, said: "The diseases of the nations before you have crept upon you: envy and hatred. They are the shaver. I do not say they shave hair, but they shave away religion." To treat hasad: frequently supplicate to Allah to remove this ailment, contemplate the Quran, especially verses about hasad, read the biography of the Prophet, peace and blessings be upon him, and his Companions, seek refuge with Allah from Satan, do not display hasad verbally or through actions, and if you feel hasad towards someone, promptly give them a gift and shake their hand, for "Shake hands, and malice will depart; give gifts to each other, and you will love each other and grudges will vanish."