Do you know where the disease lies which keeps you from reaching enlightenment? It lies where you have no faith in yourself.

When faith in yourself is lacking you find yourself hurried by others in every possible way. At every encounter you are no longer your own master; you are driven about by others this way and that. All that is required is all at once to cease leaving yourself in search of something external. When this is done you will find yourself no different from the Buddha.

From the Rinzai Roku, the recorded sayings and doings of Zen master Rinzai Gigen Zenji, died 866 CE