The art of influencing intrigues many of us. Indeed, it would almost be extraordinary or magical, since it would allow you to obtain everything you want from others. Yet mental influence can also have a dark side. It can literally break and destroy the mental health of some people, when used for bad purposes. This is why it is essential that you be able to learn about the different workings of psychological influence in order to be more alert and be able to influence your team. thus, to influence did not exist to: Resort to emotional blackmail; make the other person feel guilty; Threaten and intimidate; playing on each other's insecurities; Constantly denigrate, criticize and mock; Deny the existence of the other; Being ambivalent about your expectations; Seduce with excessive compliments;use mental projection (hypnosis, etc.) to manipulate; and use the gaslighting technique to dominate your team.To conclude, in this book there are many mass influence techniques allowing you to have professional influence. They can be done unconsciously or consciously.