We all have negative people in our life. they always criticize others and they will affect you if they are around you. it depends on where the manipulation is coming from. Go to the cause. then avoid them slowly. that will be great. I think once you identified a person to be this way, the main challenge is how you Ignore them, for that, here are some hints to get to know! If you really want to cut them out of your life, Please read this blog and get some idea how to deal with them.
Source: Manipulative People
Be Strong Yourself – Manipulation only works that far as YOU allow them!