A Sparring-Partner is The alter ego whose technical, sporting and human dimensions mastery of opponents allow an athlete to prepare in conditions perfectly identical to those of his future challenges. It's one of the essential aspects for successes of top athletes.Alongside managers, a Sparring partner allows them to master their environments, objectively analyze difficulties and opportunities, taking decisions, restore confidence in their ecosystem, and perpetuate it.My approach was built in F1, among others; who taught me that preparation, decision, confidence and team spirit were essential to win a race, but above all a championship.I then understood that in a business, with different constraints, in various contexts, the success factors remained the same, because the goal of leaders is to win!