Guru Yoga is the method for receiving the direct blessing of the guru’s mind. There are two methods for attaining enlightenment. The first is the accumulation of merit and wisdom along with purification practices. The second is direct transmission from the guru’s mind to your mind.A Commentary on the Dudjom Tersar Ngondro
Transmission really means receiving the taste of enlightenment. By analogy, when you think of a person, you get a direct feeling of that person’s qualities. These may be either positive or negative, within the limited concept of “personality”. Guru Yoga is the method for feeling and tasting the guru’s realization of ultimate wisdom. This realization is beyond personality and is always positive ~ the experience of totally faultless enlightened mind. As you experience the purity of the guru’s wisdom mind, it may appear to be coming from outside yourself. Actually, you are tasting the true nature of your own mind. Then develop and deepen this experience until you attain complete liberation. By thinking in this way, you will attain buddhahood.
Lama Tharchin Rinpoche