Greetings everyone. I have just graduated from a physics department, and intend to continue my studies through a post-graduate program. I'd like to go very deep in hep -build a career there, actually- and I'm pretty confused about the numerous fields I've encountered so far: Quantum Gravity -Loops, Strings theory, Twistors- , Elementary Particles -Standard Model, GUTs- , Quantum Cosmology etc. The same question comes in my mind all the time: "which field should I follow?" It's important to note that I -unfortunately- don't prefer a specific field. I do enjoy reading and occupying myself with many different aspects of theoriticall physics. Hence the answer "You should follow what you like more" fails. I believe that an important factor for my choice, would be the current research programs all over the world, and the progress being made in each field. Moreover, the opportunities that exist in each field, the "boosts" that come and go, the progress that NEEDS to be done. What I'm saying is that I find the current picture of hep a little bit blurry. We don't have a completely new theory to attach on, like Strings Theory, 2-3 decades ago, or we don't make many important discoveries, like those on elementary particles at '50s or '60s. What is your opinion about all these stuff? How long will Superstring theory survive, for example? What about the standard model, and the GUTs beyond it? Quantum Loop Gravity? I'd really appreciate your comments!