Because every essay question is really three or four questions combined, it's a good idea to use headings to add structure to your writing and help you stay focused on the questions being asked. Headings also make it easier for the reader to follow your story.
The most common (and most important) essay you'll write is the one that asks about career goals. It's usually combined with a question asking why you need an MBA and another asking why you need an MBA from that particular school. The basic strategy is to write something like the following three headings before attempting to respond to the questions:
Career Goals
Why an MBA?
Why This School?
Under each heading you should write a rough outline of your response. Don't worry about style, just get some ideas on paper. Then try to link your responses together into a single coherent essay. (And notice that with the headings, you don't need a transition from one topic to the next.) | 
