To the ego, the present moment hardly exists. Only past and future are considered important. This total reversal of the truth accounts for the fact that in the ego mode the mind is so dysfunctional. It is always concerned with keeping the past alive, because without it—who are you? It constantly projects itself into the future to ensure its continued survival and to seek some kind of release or fulfillment there. It says: "One day, when this, that, or the other happens, I am going to be okay, happy, at peace." Even when the ego seems to be concerned with the present, it is not the present that it sees: It misperceives it completely because it looks at it through the eyes of the past. Or it reduces the present to a means to an end, an end that always lies in the mind-projected future. Observe your mind and you'll see that this is how it works.
— Eckhart Tolle