I think this quote is about preparation. If you want to do something to be good, you must prepare it. You don’t know what will happen in the future so you must get ready all the time to deal with it. Like a travel, if you go to the place where you have never gone, you must search information of the way to go that place before you go. If you don’t do that, you may lose the way and lose the time to find the way. Doing your best today for good tomorrow.