Research Paper- Trying Again

Ok, so I need to revise my research topic. I was thinking about doing a paper on Obsessive Compulsive Disorder but maybe Sister Steadman is right. It might be too much for this paper. So...I'm back to the drawing board. Any ideas? I'm reading "Man's Search for Meaning" and I'm interested in logotherapy. But I'm afraid that I'll run into a problem similar to the one that I've already run into. I guess I could look at how prominent this technique is in psychology. All I have read about so far is from Victor Frankl himself. I am interested in the Holocaust also (something that I have been thinking about because of this book as well) but again, I think it may be too much for this paper. What is something interesting but simple? I am curious if the Atkin's diet really is unhealthy. People say that all the time, but I have a very close relative who says that she functions best and feels better on this diet. Would that be an appropriate topic for this research paper? Would it be too in depth? Can I find information on it? Anyone have any thoughts?