If you're considering picking one up yourself, there are so many ways to start.
But, she says, if you really want to see some profits, "it has to be something that you're actually passionate about."
When you're passionate, 'you actually develop that unique skill'Kristof has seen all sorts of side hustle successes.
"I think that when you're really passionate about something, you actually develop that unique skill," she says.
When it comes to identifying that passion, "I usually tell people to think about what they do for fun," she says.
Persons:
Kathy Kristof, Kristof