Hi, This has lot to do with his upbringing and childhood behavior. Probably he wouldn't have got the love and affection from his family or people would have appreciated his small help in a big way. These kind of people would take self pity and seek sympathy from others. Find pleasure and happiness in being sad and draws some kind of satisfaction from other's pain. Probably he wouldn't mingle much with people, hate going for social gatherings and get occupied with his work only. Few things you could practice: (1) Learn to ignore his behavior (2) Appreciate him for small things he do for the family (3) Ask him to develop a hobby or do some gardening work Recommend to consult psychologist.

These people live in the cocoon built by themselves, they are judgemental and repulsive.it can be because of faulty environment or even runs in the  family,he might have learnt unknowingly or sometimes relatives play a misguiding role, the sad part is they are generally loners and get surrounded by judgemental people not ready to accept them.if we get his history he must have never been appreciated properly. The family must continue to overlook his negative outlook and rigorously appreciate his small contribution, encourage him for doing charity as small as helping a needy or feeding voiceless. These people should be allowed to come out of their negative attitude cordially and with full support of the family.the family should see him as a victim of self attitude but not disrespect him.

I suggest him. To seek a professional support.. He can meet or consult a psychological Counselor for a therapy.. For a detailed discussion and understanding he can reach me by using the link given below :- https://prac.to/hema-sampath-psychologist-dir

Thank you for sharing. Where does this unpleasant feeling stem from? Why do you feel so aggressive about it? Could you please share a little more details. You should meet up with a psychologist to discuss further.