In this essay I will reflect on three in-class case exercises: pre-emptive life lessons on competition (Judo Strategy), deal making (Winner’s curse) and auctions (Bidding strategies). I selected these in-class case exercise to analyse my experience because all three have a common theme – competing strategically – and the later two have the common theme competing under incomplete information.For each exercise I will critically discuss first the strategic thinking process which I used to make my decisions, second the decisions of the other students with whom I played the exercises, third my performance in the exercises, and fourth what I have learned in the exercises that I can apply in my career.For the analysis I will use the following framework of the Game Theory extended by Behavioural Insights to think strategically on how to game competitors. First, I will use a pre-emptive approach to critically analyse my strategic thinking process in the exercises. I will review whether I thought forward and backward with both mind and heart to make my decision. In addition, I will use this approach to apply the lessons learned from the exercises to my business career. Second, I will assess whether I used the battleplan mindset in the exercises. By analysing whether I considered all information and contingencies to anticipate the decisions of others in the exercise. Third, I will examine whether I used both ‘rational’ strategic responses and psychology (Behavioural Insights) to assess my performance in the exercises.