Power Called Persuasion

What is Persuasion? 
If persuasion were a jewel, I would certainly say that it would be one of the most expensive ones. Being persuasive is almost the same as being successful in various areas of life. Some people seem to have been born with the gift of persuasion, while others train tirelessly to, perhaps one day, be good at it. 
The act of persuading is, in short, the act of convincing. Do you know someone who gets everything they want through a good chat? This person can be classified as a persuasive person. Obviously, some use this incredible skill for good while others for evil.