Another crucial point: always take into account who you are writing to. If it is your professor or supervisor (and in most cases it is this ways), make sure the style of the essay is appropriate. Thus, avoid emotional language and punctuation (. exclamation marks), informal words and idioms (. "awesome", "cool"), addressing a person directly (. Dear Mr. Anderson) or using personal pronouns ("I", "you", "they", except for when you need to state your own opinion). Instead, write impersonal phrases, often using passive voice. And last, but not least: always believe in yourself as a writer, because if you are confident about your capabilities and approach the task with aim for success, no mountain is high enough for you.