The history of "Now or Never"

I have just improvised my quote or own motto!

From

Say No to No

TO

Now or Never

What I want to mean from this quote is.. Life is only once. So, it either now you do it, now you appreciate what you have and do what you should do, or you will miss it, and NEVER have this chance again in life! Therefore, NOW OR NEVER!!!!

THanks
EgoSky - WinnShern
Now or Never