Focus not on the one hundred things that you will or may have to do at some future time but on the one thing that you can do now. This doesn't mean you should not do any planning. It may well be that planning is the one thing you can do now. But make sure you don't start to run "mental movies," project yourself into the future, and so lose the Now. Any action you take may not bear fruit immediately. Until it does—do not resist what is.

Eckhart Tolle

from The Power of Now: A Guide to Spiritual Enlightenment