Talk no Jutsu is a fan-made term given to Narutos ability to change any persons mind and beliefs simply by talking to them. It is not an actual jutsu in the Naruto series. Narutos Talk no Jutsu works by disapproving of the opponents philosophy of life and imposing his own as the more valid one. Narutos ability to inspire everyone around him eventually convinces his opponent that he is right. However, Talk no Jutsu doesnt always work well against everyone. Not everyone is like Nagato, who is ready to accept the change in a matter of moments. For example, Sasuke is so hellbent on revenge that he loses sight of whats important to him. It takes him a few years to get back on track, and not once does Narutos Talk no Jutsu work on him.