If you have no problems, then you would have no use for Zen. If you have problems, Zen offers a simple solution, throw out your mind. Zen then tells you how to throw out your mind. You throw out your mind by sitting in meditation and watching your mind. Zen is simple. The ideas of Zen are simple enough to explain to a five-year-old. Sit still, be nice, experience the world with wonder. That is Zen. It is the simplest solution to all of your problems. Stop thinking. Now.