You've said it's important for founders to be able to communicate and persuade, both in public and one on one. I think in that same talk you claimed to not be a

You've said it's important for founders to be able to communicate and persuade, both in public and one on one. I think in that same talk you claimed to not be a very good public speaker but that you were much better in person. There are lots of examples for learning better public communication. How do you learn to be better one on one?