Personal Statement help?

I was spoken to yesterday about starting to think about my university application. I want to study sociology at university and I have no idea what to put on it! I haven't taken part In any awards or received many, I want to do the EPQ, and the work experience I did is very unrelated to sociology ( I was 15 at the time, I didn't know what I wanted to do!) has anyone got any ideas on what I could include to make it seem more... interesting