A single main point doesn’t have to be kept to a single paragraph, especially if you are writing a relatively long research paper. Main ideas can be spread out over as many paragraphs as you deem necessary.
Any information that doesn’t fit within the framework of your outline, and doesn’t directly support your thesis statement, no matter how interesting, doesn’t belong in your research paper. Keep your focus narrow and avoid the kitchen sink approach. (You know, the one where you throw in every bit of interesting research you uncovered, including the fungal growth in the U-joint of your kitchen sink?) Everything you learn may be fascinating, but not all of it is going to be relevant to your paper.
If you are struggling to come up with a topic that feels “just right,” ask your professor or coworkers/classmates for advice. They will likely have great ideas that, even if they aren’t options for you to choose, can inspire you with new ideas. Asking a professor for help may seem frightening, but if they are worth anything as a professor, they want you to be successful with your work, and will do what they can to make that happen.
Use clear segues into adjacent points in your paper. Your essay should flow well, rather than stopping and starting in a blunt fashion. Make sure that each of your body paragraphs flows nicely into the one after it.
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