Business ‘Shark Tank’ investor Kevin O’Leary: The No. 1 mistake that can destroy your business By Soumyadeep Pal - October 14, 2020 0 Share FacebookTwitterPinterestWhatsAppLinkedinReddItTelegramTumblrDiggFlipNaverEmailPrint Kevin O’Leary: The No. 1 mistake that can destroy your business Search quotes, news & videos