Who is Frank T.J. Mackey in the film, Magnolia?

Frank T.J. Mackey is a celebrated speaker who helps men seduce women. He instills confidence in his seminar participants and helps them see that they can woo any woman - even women that they meet on the street for a few moments. Frank presents an attitude that he can never be beaten. He is in charge of every situation and seems to have no need for others.