The problem that I see is that is not clear what protagonist needs to do, and despite the seriousness of the depression disease, the suicide itself might not be an antagonist strong enough. In other words, external antagonist sound better in a logline. First thing I’d try to do is keep everything in a single sentence. dpg above said to clarify what becoming an alpha over suicide means because (I think) he wants you to make this elaborated in the logline. Second thing what I’d do is to add another person or situation that will push against his goal. What about a sarcastic psychiatrist or something…