Your personal statement should have a clear opening with a strong thesis statement / statement of purpose to guide and orient your reader. Don't worry about "grabbing attention" as most folks ultimately do use a lot of space without really providing useful information. Remember, your goal is to tell your story: why you want to be a doctor, what you want to accomplish as a doctor, why you will make an excellent provider, and the skills you have developed that lend themselves to a successful practitioner. It's not a rehash of your activities section but a statement that clearly connects what you want to do and why.