I think it’s really interesting that when we write or even talk about something that interests us, we don’t freak out about what to write next. Our ideas just flow from us. On the contrast, writing about the history of grass may seem like Chinese water torture for most people.
When choosing a topic for a project, dig further within the subject. If you choose too much of a general idea, it would take you forever to complete. Knowing the reason and purpose is important as well. This is known as the thesis statement and it is used to “sum up” what it is you are writing.