Birdies co-founder Bianca Gates started her company as a side hustle while working at Facebook, but it took a two-month sabbatical to realize she ought to dedicate herself to the shoe company full-time.

"We saw the impact of me jumping in and helping out more," Gates said on the Glossy Podcast. "We started to look at different data points. There were sales, editors were talking about us, celebrities wearing us, people wanting to invest, and I thought: 'I guess this is kind of that moment where you just take that leap of faith.'"

Birdies launched in 2015 and has since raised $10 million in funding, opened a brick-and-mortar store in San Francisco and expanded its original product line -- slipper-like shoes chic enough for a party host -- to include tougher-soled shoes that can be worn about town.

Gates talked about that critical moment mid-sabbatical, her evolving leadership style and the reason the startup rush for unicorn status is like the housing crisis.