There's a problem with trying to read a map in a moving vehicle. By the time you have worked out where you are in relation to where you want to go, you are somewhere else! But then you have to begin the whole process all over again. And, of course, it is going to have the same outcome. We encounter the same difficulty whenever we try to chart a course through life. Circumstances never stand still. By the time we have worked out what's really going on in our world, it is no longer happening in quite the same way. How, then, can we be sure of making the right choices? Do we go by our heart? Or by the book?