Barbara Corcoran hosts favorite 'Shark Tank' entrepreneurs on an annual retreat - here are the 5 best lessons from this year

Barbara Corcoran has turned the founders of her favorite "Shark Tank" investments into a family of entrepreneurs.

For the past four years, Corcoran has assembled a group of her most profitable entrepreneurs, along with the most promising founders from the most recent season of the show, for a three-day retreat at one of her homes. The group changes each year.

During this time, they all share best practices, give updates on successes and failures of the past year, and get to know each other better.

This June, she brought the founders of five companies to New York City, ending the retreat at a New York Yankees game. The founders, with custom "Barbara's All-Stars" Yankees shirts, got to enjoy the game from a box suite overlooking home plate.

We met up with them to discuss the best business lessons they've learned from Corcoran.