If you keep reading and skimming articles and books, you will find many different discussions and possibilities for writing topics. One way to do this is to write a list of binaries, a list of opposing ideas that may represent larger discussions about the topic at hand. Choosing from these opposing ideas in the text will lead you to ideas for a more specific argument. Scholars frequently engage in complex and long-lasting arguments that span across different journal articles and books. Professor X's article on climate change will be mentioned, discussed, or challenged by Professor Y in a book and Professor Z in another article. None of them are worried about saying things that have never been said before; the key is just to say them differently and perhaps better.
The sun was now low beneath the horizon. Darkness spread rapidly. None of my selves could see anything beyond the tapering light of our headlamps on the hedge. I summoned them together. "Now," I said, "comes the season of making up our accounts. Now we have got to collect ourselves; we have got to be one self. Nothing is to be seen any more, except one wedge of road and bank which our lights repeat incessantly. We are perfectly provided for. We are warmly wrapped in a rug; we are protected from wind and rain. We are alone. Now is the time of reckoning. Now I, who preside over the company, am going to arrange in order the trophies which we have all brought in. Let me see; there was a great deal of beauty brought in to-day: farmhouses; cliffs standing out to sea; marbled fields; mottled fields; red feathered skies; all that. Also there was disappearance and the death of the individual. The vanishing road and the window lit for a second and then dark. And then there was the sudden dancing light, that was hung in the future. What we have made then to-day," I said, "is this: that beauty; death of the individual; and the future. Look, I will make a little figure for your satisfaction; here he comes. Does this little figure advancing through beauty, through death, to the economical, powerful and efficient future when houses will be cleansed by a puff of hot wind satisfy you? Look at him; there on my knee." We sat and looked at the figure we had made that day. Great sheer slabs of rock, tree tufted, surrounded him. He was for a second very, very solemn. Indeed it seemed as if the reality of things were displayed there on the rug. A violent thrill ran through us; as if a charge of electricity had entered in to us. We cried out together: "Yes, yes," as if affirming something, in a moment of recognition.