Mercy is the compassionate treatment of a person greater than what is deserved, and it is made possible through the Atonement of Jesus Christ.
“All things which are good cometh of Christ; otherwise men were fallen, and there could no good thing come unto them” (Moroni 7:24)
hears and answers our prayers
receive guidance from the Holy Ghost
healed from sickness through priesthood power
We can strive to rid our life of arrogance, pride, and conceit. We can seek ways to be compassionate, respectful, forgiving, gentle, and patient, even when we are aware of others' shortcomings.
Luke 10:27 Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.
36 Which now of these three, thinkest thou, was neighbour unto him that fell among the thieves?
37 And he said, He that shewed mercy on him. Then said Jesus unto him, Go, and do thou likewise.
Alma 34: 15-16 the intent of this last sacrifice, to bring about the bowels of mercy, which overpowereth justice, and bringeth about means unto men that they may have faith unto repentance.
And thus mercy can satisfy the demands of justice, and encircles them in the arms of safety, while he that exercises no faith unto repentance is exposed to the whole law of the demands of justice; therefore only unto him that has faith unto repentance is brought about the great and eternal plan of redemption.
Your neighbor isn't necessarily someone you get along with, or agree with. Rather, your neighbor is someone who you see needs/could use your help. You don't have to be best friends or even friends at all.