Guidance         Is it worth the trouble to get?  Is it worth the trouble for me to get?  Is it worth the trouble for me to get it right now?  Yes or no.  That's our rumination for today: whether we want a beer badly enough to fetch it ourselves, or whether the sofa right now outranks the refrigerator.  There are times when we are into the rat race whole hog, and times to retire from it.  One way to tell how much you really want something is to watch whether you get up and go after it.  It's one...