If you then become excessively focused on the goal, perhaps because you are seeking happiness, fulfillment, or a more complete sense of self in it, the Now is no longer honored. It becomes reduced to a mere stepping stone to the future, with no intrinsic value. Clock time then turns into psychological time. Your life's journey is no longer an adventure, just an obsessive need to arrive, to attain, to "make it." You no longer see or smell the flowers by the wayside either, nor are you aware of the beauty and the miracle of life that unfolds all around you when you are present in the Now.

Eckhart Tolle

from The Power of Now: A Guide to Spiritual Enlightenment