How should I go about writing a good personal statement for a PPE/EPE application

Hi, I'm unsure on how best to write a personal statement, should I be focusing on how the subjects relate to my personal life or should I be focusing more on my specific interests within the subject?

Another issue I have is that Since PPE/EPE is a combination of multiple different subjects i've been struggling with linking all of them concisely without going above the word limit in my personal statement.

Any help and advice would be grealy appreciated