PG's essay and this one are complementary. PG adds a valuable piece which is to question the idea that work is generally or largely unpleasant by nature. Both authors agree we must get over our momentary discomforts and press ahead to lead a fulfilling life. PG doesn't really say how, only how to recognize intellectually that it's necessary. Extrapolating what he says into procrastination advice, you might end up with "remember your goals" and "be able to delay gratification."

"Letting go" is a particular in-the-moment experience that is very valuable to understand. It sort of looks like "sucking it up" but it's a release rather than a bottling up, so it's right at the heart of the issue of managing your energy and willpower well rather than flailing around and beating yourself up in response to the pressures and goals you are laboring under.