Bart revealed that, for him, the secret of success in business has four pillars:1. Love what you do. It means you will be authentic. And you will be prepared for long hours:2. Hard work – prepare for minimum 12-hour days for the next 5 years or so.3. Surround yourself with the right people. Try to meet and get to know those who inspire you.4. Continuous improvement and flexibility – Listen to feedback from your customers and adapt accordingly.