What would you actually want an AI personal-development assistant to know about you?

I've been experimenting with this idea while building an app called Depsal.

Instead of having an AI conversation completely disconnected from your life, the assistant can use things like your habits and recent journal entries as context.

For example, if you've been struggling with a habit or writing about something repeatedly in your journal, the assistant can have some context instead of starting from zero every time.

I'm curious where people think the line should be.

What information would actually make an AI assistant more useful for personal development?