From Dr. Suess:
Today I shall behave, as if this is the day I will be remembered.
And from Gracian Balthazar
RECOGNISE UNLUCKY DAYS
They do exist. Nothing goes well on them and even though the game may be changed, the bad luck remains. Two tries should be enough to tell if one is in luck today or not. Everything is in process of change, even the mind, and one is not always wise. Chance has something to say, even how to write a good letter. All perfection turns on the times - even beauty has its hours. Even wisdom fails at times from doing too much or too little. To turn out well, a thing must be done on its own day. This is why with some people everything turns out ill, with others all goes well, even with less trouble. They find everything ready, their wit prompt, their presiding genius favourable, their lucky star on the rise. At such times one must seize the occasion and not throw away the slightest chance. But a shrewd person will not decide on the day’s luck by a single piece of good or bad fortune, for the one may be only a lucky chance and the other only a slight annoyance.
Enjoy your quiet time even if you don't want to think!
Cheers