When we get too accustomed to our everyday life, we need a surprise of some kind to give us a feeling of happy wonder at the sheer fact of just being alive. When we feel like we know everything that is going to happen today, our life becomes too certain of itself. It's like knowing the conclusion of a mystery movie long before we reach the end. We become bored and disenchanted when we know too much about the outcome— that's why the director creates a surprise ending. So with our day. If we anticipate how it is all going to go for us, we have already made up our minds: everything is predictable— we know that we know that we know— it all. There is a weariness that comes from too much calculation. It's better to be open to the unexpected windfall, the happy surprise, filling our day with joyous anticipation of the new.