Professional Worrier

[oges]

George had been a compulsive worrier for years until he found a way to overcome this problem. His friends noticed the dramatic change.

"You don't seem to be worried about anything anymore."

"I hired a professional worrier for $1000.00 a week," George replied.

"I haven't had a single problem since."

"A thousand a week?" said his friend. "How the hell are you going to pay him?"

"F@#* him. That's his problem."

[soundman]

I think this is a paraphrase of a story that goes back to Henry Lawson, Banjo Patterson or some similar dude.
The full story is even better.

Any learned friends know the reference?