Gaslighters are masters of manipulation. They make you question your reality. If you have one at your workplace, they would rather burn the company to the ground than have attention taken away from them. They pit people against each other, get people fired—and the gaslighter loves every minute of it. If you have been continually sabotaged by your coworker, you may be dealing with a gaslighter. What do you do to protect yourself?

Read more at https://www.psychologytoday.com/us/blog/here-there-and-everywhere/201809/coping-gaslighter-work