I don't believe that's in Proverbs at all. Rather I'm fairly certain that it's a quotation attributed to infamous US General George S. Patton. It's likely one of the less "colourful" quotes he was known to produce!
General George S. Patton
If Today Was Perfect, All Would Become Clearer, Meanin Every Blemish, Every Cut, Every Physical Mishap About Some one Would Become Visible. So, If Today Was Perfect, Tomorrow Would Be Worse.
Proverbs 31:10-31 ;; She was the perfect wife.
It means finish what your doing instead of waiting until tomorrow to do it
This is in the wrong category, but still... There are (not "is"!) related proverbs such as: The early bird catches the worm. A stitch in time saves nine. The second "for" in the question should not be there, because it changes and narrows the sense of the admonition.
King Solomon: "Do not boast about tomorrow; for you do not know what a day may bring forth." (Proverbs 27:1 NET)
The saying, "It is better to have a hen tomorrow than an egg today," refers to the idea that it is better to have something of value in the long term than to settle for some passing desire immediately.
ok lets say today is monday. and if today is monday and today is tomorrow then tomorrow would be monday. then yesterday would be monday because tomorrow is yesterday.
deal today with ozone for a better tomorrow
Telstar Logistics's motto is 'A better tomorrow, today!'.
The day after tomorrow.
Today is tomorrow.