For many people, it is a career change, a promotion, or maybe an industry award that propels their professional life to the next level.
For Tom Toro, it was the first time he sold a cartoon to The New Yorker.
"It happened in a very modern way," says Toro. "My life changed via email."
It seems like a somewhat underwhelming email. The subject line, Toro says, read simply, 'Okay.'