The whole essence of Zen consists in walking along the razor's edge of Now - to be so utterly, so completely present that no problem , no suffering, nothing that is not who you are in your essence, can survive in you. In the Now, in the absence of time, al your problems dissolve. Suffering needs time; it cannot survive in the Now
The great Zen master Rinzai, in order to take his student's attention away from time, would often raise his finger and slowly ask: "What, at this moment, is lacking?" A powerful question that does not require an answer on the level of the mind. IT is designed to take your attention deeply into the Now. A similar question in the Zen tradition is this: "If not now, when?"