Another thing to remember is that if you are weaker than the person that you are invading the mind, then the tables could turn, and that person could invade your mind. It could be someone like me, that will make you do whatever they wanted. If they're not as strong, it could be only for a brief movement, if they are powerful, they could control your mind for as long as they wanted, even forever.
In Mr. Night's case, his also mind control power, but he implants new memories and rewires your brain, so you will belief whatever he put inside your mind, and it's the same case, it could be for a short period of time, or it could last longer. So, then whatever he did on all of the guests in Sonya's weeding was long lasting".