
“I'm a great believer in luck, and I find the harder I work the more I have of it.”
Has been attributed to Stephen Leacock's "Literary Lapses" (1910), but the quote does not appear in the Project Gutenberg edition http://www.gutenberg.org/files/6340/6340.txt of this work.
Misattributed
Variant: I find that the harder I work, the more luck I seem to have.
Variant: I'm a great believer in luck, and I find the harder I work the more I have of it.