Examining significant, life-changing events is important. (See reference 1.) Students need to think about what has happened in their lives that made them reconsider their place in the world. Examples of strong content includes significant volunteer work and vacations to third world countries. Equally important is the time you spend thinking about what your event means. Don't simply relate what happened; expand upon its significance and the effect it had on your outlook on life. (See reference 2.) Demonstrate that the event developed a passion, dream and hope to help humanity, for instance. Also, show that a specific program at their school may help you achieve your altruistic goal.
Sometimes situations arise that students have little control over, which influence their academic career. If you took a break from school, a smart idea is to provide an explanation why. (See reference 1.) You also may want to explain why your entry examinations were above average although your grade-point average was sub par. Honesty is the key here; even if a situation is personal, you may find more lenient admissions counselors if you are candid. Telling them that your parent died or that you were diagnosed with Attention Deficit Disorder may warrant some sympathy. Of course, you may not want to examine troubles with the law or periods of rebellion that kept you from success.
Once you have the content established, the grammar and language that you use is important to examine. Never go with the first draft that you write. It typically has some fundamental issues that you can resolve by reading it aloud to someone else. Also, use specific examples to show the importance of the events that you describe. (See reference 3.) Delve into the topic and reveal little moments that stood out to you. For example, you could say, "I learned that third world children need the help of the more fortunate, and I enjoyed finding myself in the process, too."