Choosing the topic for your dissertation should be your strongest academic interest in your field of study. Contemplate recent events, lacunae in research, and future professional goals. Discuss the ideas with your advisor or professors to clear their thoughts and get feedback. A topic must be a narrow enough methodological feasible topic for which resources are reasonably obtainable. If you really find it overwhelming or uncertain, you can always seek professional help. Many students seek do my dissertation services. Be realistic about the extent and length of your project. Finally, always choose a topic you are truly passionate about so that you will stay excited throughout your research journey.