Diseases: Bughud (Hatred)
Hatred for other than the sake of Allah. The Prophet (sallallahu ‘alayhi wa sallam) didn’t hate things for their essence but he hated the manifestation of their actions. Incompatibility with someone is normal but that doesn’t mean we should hate them. There was once a hadith where the Prophet (sallallahu ‘alayhi wa sallam) was sitting with his companions and he told them, “Shall I point to you one of the people of the Station of Paradise?” and they said “yes”, so he pointed to a man that was walking by. One of the Sahabas decided to befriend the man, and asked him if it was okay if he followed him around. The man agreed. The Sahaba noticed that the man was just an average Muslim. He didn’t do anything out of the ordinary, didn’t pray at night, or fast as much…So he wondered what his secret was. When he finally asked the man, the man replied “I can’t think of anything, but at night I do not go to sleep with rancor in my heart against any other Muslim”. The Sahaba immediately knew that that was his secret. (This and other hadiths are roughly paraphrased).
Pray for the one you don’t like. Make dua specifically for them, and for Allah to remove the rancour in your heart.