It doesn't.
You clarify *through* action. You discover what matters by actually doing things, failing, adjusting, and doing them again. Waiting for perfect certainty is just another way to stay stuck.
Start with what's in front of you right now — the small thing you're curious about, the conversation you've been avoiding, the project that won't leave you alone. Take one real step this week. Notice what happens. That's how you build momentum and find your actual path, not the imaginary perfect one.
What's one small move you could make today that would tell you something true about what matters to you?