One of the most important elements to writing a successful personal statement is the research that goes into it; this is not something that you can sit down and fire off in an hour. A good personal statement takes quite a bit of research before your pen even hits the paper.
Keep all of this research well organized as you move into the brainstorming phase of writing your graduate school application and then as you write your essay.
For more information and tips on writing a winning graduate application essay, check out: