The third annual CNBC Changemakers list will be revealed Wednesday, February 25th Jenny Just has had a lot of success over the years, from profits booked trading options to founding a fintech company with just $1.5 million in seed money that has made her a billionaire. But she says one of the most important skills of her career she learned very late and at considerable cost. "I think I could have saved 10 years of losses off my career if I had learned poker sooner," Just said on the "CNBC