This will be my only lifetime as the person I am today. I will only pass through this day once. What I do with this day I will only be able to do once. If I waste the entire day, it will be a day wasted; if I walk blindly through it, it will be a day unseen; if I hate it, dread it or wish it away, it will be recorded in my brain as a terrible day. In any case, I will never have this day back to do over again. How I conduct myself in it will be all that I have to carry away with me; how the way that the moment transpires will be what is written into the diary of my personal experience, the diary contained within my mind.

This is my only opportunity to live this day.

Through this toilsome world, alas! Once and only once I pass; If a kindness I may show, If a good deed I may do To a suffering fellow man, Let me do it while I can. No delay, for it is plain I shall not pass this way again.
Author unknown