"Trust your vision. If you believe in it so fiercely, somebody out there is gonna believe in it too," Garten told Winfrey of staying true to herself

"I think Jeffrey would've been a great parent but I don't know whether I would've been a good parent," Garten tells PEOPLE

The Barefoot Contessa and Stewart disagree on the reason for the end of their friendship

“I never bring something that the hostess can serve right then because it disrupts their meal,” said Garten