Barbara Corcoran says all great entrepreneurs have imposter syndrome, and it's key to success

• Barbara Corcoran said having imposter syndrome or self-doubt at work is beneficial. 
• This is because it drives people to work harder, she said. 
• Corcoran, who founded real estate brokerage The Corcoran Group, said her success is due to her insecurity. 

"Shark Tank" investor Barbara Corcoran said there are benefits to feeling a little insecure at work. 

"I'll let you in on a little secret: all great entrepreneurs have imposter syndrome," Corcoran wrote in the caption below one of her recent TikTok videos.