To be honest, while some healthy competition between friends can be a good motivation in achieving better results, make sure you do everything in moderation, otherwise there is no point in allowing intense academic competition in severing friendships. To remain competitive, as others above has also stated, is to make sure you are really competing with yourself-it is much more meaningful to improve upon your personal performance and do your personal best rather than trying to beat other people while not even sure whether you were able to achieve your personal best as a result. Intensive competition with others will also mean it will add a considerable amount of psychological stress which is unnecessary where you always try to find out each other's study habits, study notes and work progress. Make sure it remains moderate and healthy and make sure you support each other along the way
-best wishes for you to ace your studies this year-remember-try to achieve your personal best every time, and you will stay competitive, regardless of whether your results are better than your friend's or not.