‘When we hear that zazen is about no achievement, we immediately ask, “If zazen is that, how can I do it?” But this is a question exactly stemming from the framework based on “means and end” which is always behind the shuzen approach. It is nothing but an undertaking to grasp zazen using the shuzen concept. This shuzen attitude is deeply rooted in our way of behavior and thinking. That is why we should take a radically different approach to zazen so that we can avoid changing zazen into shuzen, consciously or unconsciously.’ (from the Soto Zen Journal)
A radically different approach is what makes zazen so valuable, and so challenging (more on zazen and shuzen here).
Shundo David Haye 