Via Daily Dharma: Sit, Sit, Sit

The zazen period we are recommending is 20 minutes. You may find that you will want to do more—or less—and that is fine. What is important is consistency. To keep your practice consistent, remember what the famous Nike ad says: “Just do it.” Don’t concern yourself with trying to get to some particular place or state of mind. Each day’s zazen will be a little different, just like the rest of life.

—Roshi Pat Enkyo O’Hara, "An Introduction to Zen"