A Tale of Two Truths

Here's a confession.
I love Harry Potter. A lot.

Here's another confession.
I feel like I've learned a lot from those books.

At the close of the Harry Potter and the Chamber of Secrets, Dumbledore taught Harry a universal truth.
I'm going to number it Universal Truth Thirty Six
It's our choices that determine who we are.

It's the decisions we make, big and small, on a day-to-day basis that determines who we are today; who we will be tomorrow; and who we'll have become a year from now.

That being said, another piece of children's literature taught me
Universal Truth Thirty Seven
If you don't know where you're going, it doesn't much matter which choices you make.

(The Cheshire cat taught this truth to Alice.)

Know the person you'd like to become. Know where you'd like life to take you.
It will back up the choices that you're making with direction and meaning.

If you don't have meaning backing your decisions, then just as the Cheshire cat taught us, they don't really matter.
You can become any person at all, if you don't have a preference on what type of person you'd like to become.