How to Make Your Point in Business Writing - US News
Generally speaking, in school we are taught to write academic papers. These are usually lengthy and written in paragraph style. Normally you are trying to prove a hypothesis or simply summarize material you've read. This approach is so distant from writing in the business world that it's no wonder most people struggle with it when they start working.
Here's the most important thing to remember: More information does not equal more important information. You need to go for quality over quantity when writing.