Here's an end-of-the year exercise you might find useful. Look back at your appointment book or calendar for the last year (and the prior year, if you still have it). You'll probably notice a clear trend: temporal proximity, like physical proximity, tends to temporarily lead to a perceived exaggeration of importance. Obviously there are logical reasons to view the world this way, but it's possible to pay too much attention to today and not enough to yesterday and tomorrow. Indeed, basing one's mental state solely on what's happening at any given instant, and evaluating that situation relative to the immediately preceding situation or to your expectations, is a recipe for being happy half the time and unhappy half the time. Try to structure your activities and mental states in the coming year in such a way that as things happen you don't temporarily overestimate their importance.