Too often, essay writing is at its best if made personal. However, that is not always the case as it will depend on the subject matter and what your teacher or professor requires. If an essay was made personal, it would be a much easier read. On the other hand, if your teacher or professor struggles with unfamiliar words and impersonal anecdotes while reading your essay, they may not mark it with a favorable grade when they are done reading, even if all you stated there are facts.
Your ideas and thoughts should be brought across with clarity and specificity. You will not be able to catch your teachers attention if your message is not clear at all. Try to avoid abstract writing, this could be an ideal writing style but it may be ambiguous. Be concise. Do not confuse your readers. Do not let your readers puzzled. Do not leave them guessing which one is your message. Do not compromise style with clarity. Your writing style could be ideal but it should not be misleading or in any way confusing. Also, do not go round the bushes, convey your thoughts straight to the point. You may put a little tinge of suspense in your essay, but it should not be too long that it annoys your readers.
Your essay should be inspiring to your reader - your teacher. He should receive a message that your essay is worth reading because there is something to learn from it. Even if it is a plain informative essay, you still have to inject a touch of inspiration into it. Your essay should also teach or educate, in one way or another, even if it is a plain entertaining essay. It could also serve as an eye-opener.