The Now is all that exists.

Nothing Exists outside the NOW. Nothing ever happened in the past - It happened in the Now. Nothing will ever happen in the future - It will happen in the Now. When you think of the past, it is stored in the mind as a former now, and when you think about the past, when do you do it? You do it now! When the future comes - it comes in the now, and when you think about the future, when do you do it? - You do it now! The past and the future have no realities of their own. Their realities are "borrowed" from the now.”

Extracted From : Beyond Positive Thinking