You know it. And you've always known it. You read all the books, watch all the movies to understand that the main teacher, like the only student, is inside. It is yourself. And there is no other. And there won't be. ☺

You have to learn from yourself and experience always costs money. The door inside always opens from the inside.
When you tell everyone how happy you are, the most important thing is not to make your voice tremble.