If I had to boil down what my parents taught me through life, it'd be three things:
- We love you unconditionally
- You can do anything you put your mind into (kid version) / You'll fail at a lot of stuff, but that failure is essential for success (non-kid version)
- Happiness is a byproduct of the good you spread around.
Number 1 provides confidence in self, number 2 pushes for an active stance in life and number 3 is the core life mission.
Looking back, specific advice was always based on a reading of these core concepts. You can't possibly predict every specific piece of advice your child will need. You can, however, provide a framework for her to evaluate her options down the road.
Leave her a few videos, exposing *your* core approach to life, so that she can reason like you do. Every word will be treasured. Then, when you have a satisfying length of recorded messages, spend time with her and your wife. Don't fret about setting up memorable events. Just take the time to enjoy yourselves together. She'll remember it fondly.