Giving in to a controlling person might feel like "keeping the peace" for the moment, but it's actually starting a very toxic pattern. Each time the controlling person gets what they want you to do, that gives them a little more power over you for the next thing they'll want from you. Trust me, this pattern will continue over and over again. You will eventually be worn down and under their control.
Except for the weak. You can control the truly weak-minded and needy in a heartbeat. It must be a total thrill for the corrupted soul, but I imagine that it would get boring, even for psychopaths, after a while... ~ETS