From an academic open course by University of Reading on FutureLearn.com
Although it is important to make use of our personal background knowledge when we write, academic writing is not usually personal. Instead, academic writing should be impersonal or objective. Writing in an academic way involves observing the world as an onlooker. Perhaps the best way to understand this is to imagine that you are inside a house looking out through a window, writing about facts and situations as you see them rather than experiencing them yourself. As you become a more experienced writer, you may learn about other academic genres that require more personal involvement, but when you are beginning to write, it is important to learn how to write objectively.
You should also make sure that the topic is not personal.
