Behavior Guaranteed to Antoganize People and Encourage Them to Avoid You

If people tend to avoid you, you may have already mastered most of the techniques listed below.

Cultivate the "I Syndrome".
Insert as many personal pronouns as possible into every paragraph that you write or speak. Try to work them all in whenever possible: I, me, my, myself, mine.

Seek every opportunity to turn an intelligent debate into an antagonistic argument.
If it's not what you want to hear, make stuff up! Challenge fact with factoids. Disregard what has actually been said or written and deliberately misinterpret or misrepresent another's viewpoint.

Make every conversation about you.
Feign interest in what others are saying, then expound upon every remarkable or unremarkable feat you have ever performed or intend to perform someday, maybe.

Permit no aliment, injury or terrible experience to be worse than yours.
If someone breaks a bone, provide gruesome details about the compound fracture you once suffered. If they have a headache, complain that you suffer from chronic migraines. If someone has been in an automobile accident, describe how your car was demolished and that it is a miracle that you are still alive.

Seek sympathy at every opportunity.
Should someone mention a recent social activity, sadly state that you seldom get to go anywhere. If a neighbor buys a new car, complain that you can barely afford basic necessities. If an acquaintance is excited about an upcoming family gathering, exclaim that your family members apparently don't care enough to visit very often.