This article is useless and gives no real advice except "get out". To deal with abusers you have to learn to see tricks they use to emotionally destabilize their victims. For example, they can use hints and innuendos for intimidation. I wrote a blog post about such communication https://dandanua.github.io/posts/counterfactual-communicatio...
Also, you can't really "manage" your boss if he/she is gaslighting you. This is a criminal offense (or should be, depending on where you live) and must be punished accordingly.
Also, you can't really "manage" your boss if he/she is gaslighting you. This is a criminal offense (or should be, depending on where you live) and must be punished accordingly.