Learn to ask, “If this is the only thing I accomplish today, will I be satisfied with my day?” Don’t ever arrive at the office or in front of your computer without a clear list of priorities. You’ll just read unassociated e-mail and scramble your brain for the day. Compile your to-do list for tomorrow no later than this evening. I don’t recommend using digital to-do lists, because it is possible to add an infinite number of items. I use a standard piece of paper folded in half three times, which fits perfectly in the pocket and limits you to noting only a few items. There should never be more than two mission-critical items to complete each day. Never. It just isn’t necessary if they’re actually high-impact. If you are stuck trying to decide between multiple items that all seem crucial, as happens to all of us, look at each in turn and ask yourself, If this is the only thing I accomplish today, will I be satisfied with my day? To counter the seemingly urgent, ask yourself: What will happen if I don’t do this, and is it worth putting off the important to do it?