The Power of Now, not Whenever!

There's a book "The Power of Now" - I have a copy but I've never read it. It sits alongside "The Road less travelled" and "Zen and the Art of motorcycle maintenance" - and I haven't read those either.
Since spotting "The Power of Now" this morning, I've adopted it as my mantra and am trying to do those little jobs when I spot them.
It fits in with my other Mantras "Don't put it down, put it away" and "Don't put off until tomorrow that which should be done today". I'm not very good at remembering those either.

Do you have any similar Mantras?

OH thinks my mantra is "why do it today, when you could do it tomorrow"