Although there might not have been a grand moment in your life, there are still some small and memorable ones that affected you somehow.
You can choose a few interesting or even funny moments that show what you have been through, how you acted in certain situations, what your biggest desires are, and so on to present yourself from the desired side.
Writing a paper, you will need to show your strong sides, skills, and knowledge.
However, you cannot simply claim how great and qualified you are.
However, the narrative is not the only thing to pay attention to.
There are a lot of silly mistakes applicants make while writing. If you are asked to send an essay of 500 words, for example, you need to try to make the word count as closer to this number as possible.
Some of the best facilities have hundreds of candidates for one spot, and it is only up to you whether you will be noticed in the crowd. However, there may be thousands of other people who have better or nearly same results. Most of the documents you send to the school tell admission officers about your academic background and work experience.
They do play a great role while making a choice, but they do not tell anything about your personality.
The paper has to focus on a certain event, turning point or decision that have influenced you and changed the way you see the world.
If nothing like that ever took place, it is still important to find a theme to hold on to in the paper.