There are many fine things which you mean to do some day, under what you think will be more favorable circumstances. But the only time that is surely yours is the present, hence this is the time to speak the word of appreciation and sympathy, to do the generous deed, to forgive the fault of a thoughtless friend, to sacrifice self a little more for others. Today is the day in which to express your noblest qualities of mind and heart, to do at least one worthy thing which you have long postponed, and to use your God-given abilities for the enrichment of some less fortunate fellow traveler. Today you can make your life big, broad, significant and worthwhile. The present is yours to do with it as you will.

Kleiser - today is the day - wist_info quote

Grenville Kleiser (1868-1953) Canadian-American self-help author
Inspiration And Ideals: Thoughts For Every Day, “August Twenty-Eighth” (1918 ed.)