Aside from grammar, the most common writing challenge for most people is organizational structure, or the way text is organized into paragraphs and sections. The goal of any document—everything from emails to proposals to reports—is to effectively communicate your message and to make it easy for your readers to understand that message. The way you structure your writing helps your readers make connections between the thesis—the reason your are writing the document—and the body of your text. If your readers are confused or need to hunt around for your thesis and main points, then your emails and proposals will have less impact.