Hello everybody! I'm currently in the third semester of my Masters' and still haven't decided which direction to specialize in. So far, I have been doing almost exclusively theoretical courses (particle physics and QFT, GR, advanced stat. mech) with a computational physics lab class being the only exception. Of course, I have already talked to some professors and have been offered two topics, the one being in the area soft condensed matter and the other in cosmology. I have considered going into soft matter, because I like stat. mech. a lot and wouldn't mind doing some programming. On the other hand, there seems to be very little theoretical (by that I mean pen and paper) work involved. The mathematical tools employed in the field seem rather simple compared to other areas of theoretical physics - but maybe I'm wrong. That being said and without meaning to offend anyone, going into the field feels a little bit like choosing the quick and easy path - in the sense that I won't be dealing with mathematical problems most of the time. Furthermore, I feel that if I go into soft matter, all the work i have invested in trying to understand the most fundamental theories describing nature has been mostly in vain. Also, I will probably forget about the the little I have learned about QFT and GR if I don't need it. I have heard that soft condensed matter is a very active and growing field. There seems to be much that hasn't been done. This, on the other hand, might just be a consequence of the ever increasing computing power. Nevertheless it is an exciting prospect to enter a field in which not all of the low (or at least, not so high) hanging fruits have been picked. As for cosmology: I think it would be a good opportunity to deepen my (as of now, very limited) knowledge of the most fundamental aspects of physics. Also, I like cracking theoretical problems analytically, although I'm probably not very good at it. In any case, I don't see myself becoming a cosmologist though. I still haven't completely given up on becoming a scientist and getting a phd position in cosmology is probably a lot more difficult. My plan was to start working on my thesis at the beginning of my second master's year - which is almost half over by now and I'm getting desperate. I'm scared of making a choice because no matter which topic I choose, I will have to give something up. It feels like as if as soon as I step through one door the other one will close. How did you physics people cope with the fact that you had to specialize in a particular field eventually? I would really appreciate some comments on my considerations, as hopelessly naive they may seem to the more experienced.