The best thesis topic is one that is narrow, researchable, and pertinent to your discipline while still of interest to you. There should be enough valid sources to sustain your research; otherwise, a lack of references will hinder your ability to write adequately. Generally useful feedback on an initial topic can be obtained by talking to professors or using a professional thesis editing service to assess its clarity and feasibility. The topic should also relate to your academic and career aspirations so that it goes beyond simply being an assessment completion exercise. If the topic meets all these requirements and excites you, then the thesis is probably an excellent choice.