A man who understands the Tao in the morning may die with content in the evening. Because when you understand, you do not put your hope in time, time will not solve a thing. So when we enter into the practice of meditation, of yoga, we are doing something radically unlike other human activities. Of course, the way yoga (is sold in the United States), like everything else, is that it is supposed to be good for you. It is not. It has nothing to do with anything that is good for you. It is the one activity which you do for its own sake.
Clutch reality in terms of thoughts, symbols, descriptions, definitions. Give it up. Its not easy because we do it habitually. But until there is silence of the mind, it is almost impossible to understand eternal.