Who originally said this quote "Dance like no one is watching...."?

hey, I was wondering if anybody know who originally said/wrote the quote: "Dance like no one is watching, love like you'll never be hurt, sing like no one is listening, and live like it's heaven on earth." I have tried already to research this and I got a few different answers like some... show more hey,
I was wondering if anybody know who originally said/wrote the quote:

"Dance like no one is watching,
love like you'll never be hurt,
sing like no one is listening,
and live like it's heaven on earth."

I have tried already to research this and I got a few different answers like some web pages said that it was William Purkney, another one said that it was Mark Twain and another one said that it was just an old Irish proverb. Does anyone know who said or wrote it originally??
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