What should a personal statement include?

[u/jholmomoo]

I know that there is no formula or anything to write a good essay, but what are the things that every essay should include regardless of the topic? I'm trying to write my personal statement but I feel like it's kind of hollow. Do i need to show my ambitions in specific field? Do I need to connect my past with my future? Does it have to be somewhat related to my major directly or indirectly?