So how do I know what universities want? Start by reading about the university, the course you want to study and the "entry profiles" as these will give you information about the type of student the university is looking for. Universities also want the truth so do not lie about your abilities and they want your writing so do not ask someone to write the personal statement for you. Some areas to cover include why you want to study this subject, what your future career plans are, what you do in your free time, what skills you have (academic and non_academic), what's interesting and/ or different about you.
When you set to create your personal statement for college, you suddenly are not in that world anymore, and you know it deep inside. Seriously, no one from admissions wants to read another essay about how much someone was inspired by Gandhi, or Martin Luther King Jr. No one wants to read your personal statement for college about the first time you played football with your dad, or learning the value of teamwork from a little league game. No matter what you write, the chance is that they have heard it all so often before, and they are surely going to hold that fact against you.