The ability to live in the present, right now, in the instant, is a spiritual power, reflecting the awakening of the soul and requiring a sub-conscious control of the mind. The mind lives in the past, and the mind tries to live in the future. But when you quiet your mind, you live in the present. You are living within your soul, or the higher state of your mind which is undisturbed by the things of time. The simple formula for attaining the eternal now, is affirming to yourself "I am alright, right now", "Just this instant, I am alright". Let this feelingpermeate deeply in the mind, it be a shock to the disturbed part of your mind, it will not only be shocked, it will be shattered out of its disturbance when you declare the truth that you are all right in the eternal now. This abidance in the eternal now, lifts you to a higher state of consciousness above fears, worries and doubts . - H.H. Sri Sivaya Subramuniaswami
This is quite what Eckhart Tolle advocates in the "The Power of Now"