Another important role of the PS is that it allows you to explain, although briefly, some information that may not be accurately represented by your transcript or Curriculum Vitae. For example, your GPA might be low because your school places a cap on grades given to students belonging to your major. Another example would be explaining the connection between your undergraduate major and your chosen graduate major, which might seem incongruous at first inspection. For these reasons alone, it is extremely important that you follow a guideline in composing your own PS.
So let's take a look at the way your personal statement should be structured? If you spent, time analysing our sample personal statements http://www.getintouni.com/Samples you will see that each paragraph revolves around one particular incident or the subject area of study. Although the personal statement should logically flow from start to finish, none the less, unlike a book with a distinctive story running through it and building up to a climax, a personal statement is episodic in style and content so each paragraph stands out.