Either you appreciate every day as a priceless period of time; either you waste it ignoring the irreversibility of the flow of time. Either way, it goes by.
While it’s your choice how you spend your day, the choice a reader makes to read your book in a specific day it’s your responsibility. Cherish that day the same way he/she does. It’s THE DAY YOUR BOOK IS READ.
Think about it while you write and strive to create an exceptional read, to offer a life changing experience.