Hah.  Empty your mind, grasshopper?  It is the nature of the mind to think. The problem is that our minds have become too busy.  Attempts to force the mind to be quiet go against the nature of our existence. The mind naturally quiets when it has stability, and stability of mind arises from focused attention.  By cultivating our capacity to focus attention, we quiet our mind. This leads us to the paradox of concentration and relaxation: the more concentrated the mind, the more relaxed we feel.