Diligence has three aspects. The first, called armor-like diligence, is to develop a joyous courage and fortitude which you wear like armor against discouragement. The second is diligence in action, which is to set about accumulating merit through the practice of the six paramitas without delay or procrastination. The third is diligence that cannot be stopped, an insatiable and unremitting energy to work for the sake of others. Diligence should permeate the practice of the other paramitas, and invigorate them all.

Dilgo Khyentse Rinpoche
from the book The Heart of Compassion: The Thirty-seven Verses on the Practice of a Bodhisattva
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