Ernest Hemingway wrote it!

“There is nothing else than now. There is neither yesterday, certainly, nor is there any tomorrow. There is only now, And if you stop complaining and asking for what you never will get, you will have a good life. A good life is not measured by any biblical span.” ~Ernest Hemingway  For Whom the Bell Tolls

..﴾͡๏̯͡๏﴿..!