Now, on a separate sheet of paper, write down your working thesis statement. Identify the weaknesses in this sentence and revise the statement to reflect the elements of a strong thesis statement. Do, A thesis is a type of research paper based on your original research. It is usually submitted as the final stage of a PhD program in the UK. Writing a thesis can be a daunting experience. This is because, along with a thesis, it is the longest text that students typically complete. It depends on your ability to conduct research from start to finish.