The Shark Tank star -- who sold her real estate empire The Corcoran Group in 2001 -- has authored several books, is an active mentor to a rotating list of startups and, thanks to her ability to mine her life story for digestible morsels of wisdom to feed the next generation of aspiring entrepreneurs, is a regular contributor on the Today show as well as an in-demand speaker across the country. Corcoran said on Tuesday that while you can have it all, she believes you can't have it all at once.