I’m an engineer and my first start-up failed because I took a 100% product-focused approach. Lesson No. 1 : fake it until you have to make it and learn to sell. Then I joined this start-up as a business developer and met lots of real entrepreneurs. Beyond cash and the team, their main focus is execution and they consider their core skill to actually be limiting the risk. Lesson N°2: : Learn to limit the risk and train to make things happen. That’s precisely what I’m doing at Fast-Up Partners : building strong analytical skills through our consulting activity as well as the ability to bring ideas to life through our venture development projects.