A bad day doesn’t mean a boring day. A monotonous day is a “good day.” It’s a great tragedy when people misread the signals of life and are sad instead of being happy. A person convinces himself that he is sad because he has no place to go; he interprets it as “a day of misfortune.” He may begrudgingly accept that Hashem is sending this situation, but he still views it as a misfortune. That’s misreading the signal. Does he prefer the “excitement” of going to the hospital, arriving in an ambulance with its siren shrieking? Therefore, enjoy that quiet day at home or in the office or in the yeshivah. Say “Baruch Hashem” all day long. Just being healthy requires many things to be right. A normal bowel movement is a complicated process. How many things need to go right so that your eyes don’t have light dancing in front of them? How many details are necessary for your blood to have the correct pH level? The acidity of your blood needs to be precisely balanced — your blood sugar level, too. Not everyone’s kidneys are working, or heart is beating properly, or lungs are pulsating, or liver is manufacturing new chemicals and pouring them into the body. Millions of processes in all their glorious details must be correct to make it a nice, quiet day. Every moment, so many miracles upon miracles are taking place. They are so complicated that they cannot be properly described. The depth and complexity are bottomless. Everything must be perfectly precise to make it a nice, quiet day. Therefore, we have a lot of work to do on a quiet day. We must tear ourselves away from whatever we are doing to focus on this job, because it is a very big job we were put here to perform.
Astor, Yaakov. Rav Avigdor Miller on Olam Haba (p. 118). The Judaica Press, Inc.. Kindle Edition.