What is most valuable to you?
Invest in that which has MOST value to you, to preserve that value. Then, it will have done its job well.
Of course, THAT begs the question: what is most valuable to you?
For me, it is my family, and their unshakable confidence in my love and generosity, no matter what. I also know that my own family will never ignore me, or worse, turn me away, because they love me as I love them. That kind of security cannot be bought, but comes from continued high priority investment - and esteem.