What information did your guardians or parents omit from the 'Navigating Life Handbook' they passed on to you?

I was discussing with lillycoyote how it seems, in some ways, our caregivers didn’t prepare us for life.

This isn’t to be negative about parents but rather an acknowledgement that there is far too much unknown about life to ever pass along a complete handbook.

In your experience of yourself and/or others what was missing from the metaphorical handbook?