Only make promises to yourself that you know you can keep, otherwise you’ll never have confidence in yourself and you’ll find that you won’t be able to make promises to yourself at all. Being able to make promises to yourself is keenly meaningful. It’s a way of giving your life real direction and enabling something positive to happen – especially if you link your promises to the wish for the liberation of everyone everywhere.
p144, Roaring Silence: Discovering the Mind of Dzogchen, Ngakpa Chögyam and Khandro Déchen, Shambhala, 2002, ISBN 1-57062-944-7