“Once the Tibetan Queen Ngangyung Palje Gyalmo asked Guru Padmasambhava for teachings on the nature of mind. He introduced her to the nature of mind, and at the end he said:

    Practice many times and in short sessions, like an old leaking roof,
    While continually maintaining joyful effort.

Meditate by resting in rigpa for short periods according to your capabilities. Repeat your recognition many times, with an emphasis on the quality of your practice rather than striving to practice for a long time. Between formal sessions of sitting meditation, cultivate devotion to your teacher, pure perception of your fellow practitioners, and see the whole universe as unreal and like a dream. Reactivate all of these points during post-meditation, and then return to Dzogchen meditation. By carefully considering the seven nails again and again, you will develop a deep sense of impermanence, karma, and the futility and unreality of samsara, as well as joyful effort on the path, devotion to your teacher, and proper presence in meditation.”

Venerable Khenpo Rinpoches
Forthcoming: The Seven Nails: The Final Testament of the Great Dzogchen Master Shri Singha (pg 97)
www.padmasambhava.org/chiso/books-by-khenpo-rinpoches/the-seven-nails-the-final-testament-of-the-great-dzogchen-master-shri-singha/

Photo of Ven. Khenchen Palden Sherab Rinpoche meditating in 1992, by Nancy Roberts.