Your roommate has issues. It is perfectly ok to study 24/7, cause that is his preference. The fact that he is saying you will fail because you are not following him is total BS. You are in your second year of medical school. You have found what works for you and what does not. No one in your class has taken the boards, so they have no idea what works and what does not and therefore there is no way your immature roommate can know you will fail. My guess from my experiences is that he is not a gunner but rather is cut throat and is trying to eliminate "competition" by trying to instill fear in you. Do not listen to him and next time he says it, tell him to grow up and worry about himself. If the problem persist, I would bring it up with student affairs, because it is not fair to you to be subjected to such childish behavior, especially since second year of medical school can be very stressful. Focus on your school work and whatever additional time you have left use it towards boards prep and annotating goljan, or w.e else you choose to do for boards studying. I would not worry too much about placing more emphasis on boards until March, and from that point try to progressively increase the amount of time you allocate for boards prep.