So break the old pattern of present-moment denial and present-moment resistance. Make it your practice to withdraw attention from past and future whenever they are not needed. Step out of the time dimension as much as possible in everyday life. If you find it hard to enter the Now directly, start by observing the habitual tendency of your mind to want to escape from the Now. You will observe that the future is usually imagined as either better or worse than the present. If the imagined future is better, it gives you hope or pleasurable anticipation. If it is worse, it creates anxiety. Both are illusory. Through self-observation, more presence comes into your life automatically. The moment you realize you are not present, you are present. Whenever you are able to observe your mind, you are no longer trapped in it.

Eckhart Tolle

from The Power of Now: A Guide to Spiritual Enlightenment