how to deal with negative people

Inspite of negative response you tried to stay strong, but you end up exhausted and stress.
Most of the time why those people are negative is because they feel frustrated trapped and lack of self esteem. some people thingk the only way they can feel powerful is by hurting others.
Whenever there is negativity just smile, dont say anything remain competely detached from it and dont get involved in it, leave the room if you can. The negative person is seeking to get a response from you.
Say to your self what a shame this person is so unhappy, and hope that some of your positive ways will rub off one you.