Did you notice that having talked to a person, full of negative emotions, you unwillingly get some flood of negative emotions as well. Thus, not suspecting, people exchange negative emotions almost all the time. It looks like we draw people in the circle of our emotions. This very reason lies under the psychological tip advising being in contact with optimistic people if wanting to be in high spirits most of the time.
It goes without saying that we cannot always be in contact with only those people we find positive, cause besides our friends and family we have to interact with colleagues and other people in shops, in the street, etc. But don't feel despair. There are splendid tips, I am going to share with u, to eradicate impact of negative people!

If you have such an opportunity it's better to shorten the interaction with the person, arousing negative emotions in you. If it's impossible, for instance it's your colleague, chief, mother-in-law, be inattentive to what the person