What's the Biggest Mistake 'Sharks' Ever Made?

Moguls Kevin O'Leary, Mark Cuban and Daymond John of "Shark Tank" reveal their biggest business mistakes.
1:30 | 05/08/14

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Transcript for What's the Biggest Mistake 'Sharks' Ever Made?
I've always tried to to make my my wins as -- as possible and my mistakes. -- recoverable. -- had money stolen from me I've had people acquitted inopportune times I've started businesses that we're just plain stupid. And I've learned from all of them. So I but they've all been little mistakes and I think that's that's probably the you know what what has helped me the most that when I do make mistakes are I recognize them as quickly as possible. Minimize them and move on and and don't dwell on -- just learn from the biggest mistake I ever made was not listening to that voice -- -- The one that kept me focused. I remember making investments in making decisions that I didn't feel good about internal. I will never do that again always listened to your -- self. He knows what it's talking about. I think that's -- First really came -- money I didn't have financial intelligence. And what I do was to spend on everything I thought I was making investments you know when you go in Kenya and -- -- that. Com jewelry. Retains a lot of value that's wrong precious stones do so when you have a half a million dollar diamond crusted Mickey Mouse -- and you kinsella backing you know 300000 sport and you realize that maybe that can -- Wasn't precious stones. So financial intelligence was probably the lack of it. Was probably the biggest mistake I learned in the beginning. Thank god I recovered from.

This transcript has been automatically generated and may not be 100% accurate.

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