Your personal statement is your big chance to make an impression on an admissions office. It's uniquely personal to you, with no prompt or guidelines on how to write it. This freedom is exciting, but it's important to know what content schools will be looking for inside that important essay.
 
If you are applying to a school in the USA, admissions officers will be looking for something very different than schools in the UK. This free download will give you the basic guidelines for what to focus your essay on depending on the country.
Good luck! And remember to be honest and optimistic. Your unique voice is the key to finding your best fit!