Concentration is important in writing because the writing process requires effort, from overcoming writers block to intense concentration composing a document often involves. Errors, omissions, and unclear phrases may lurk within your document, waiting to reflect poorly on you when it reaches your audience. You should think of the review process as one that hardens and strengthens your documents, even though it may require the sacrifice of some hard-earned writing. General revision requires attention to content, organization, style, and readability. These four main categories should give you a template from which to begin to explore details in depth.