Reflecting gives you leverage for the same reason refactoring your codebase does.

Reflecting is about refactoring your worldview.

When you're on the dance floor, you have a high-fidelity situated sense… but can't see the patterns.

When you're reflecting you're up on the balcony.

From that vantage point, other dimensions immediately become obvious.

A mix of being on the dance floor, developing intuition, and also able to see the same situation from the balcony is how to get maximal growth.

Mentoring is a form of reflection that also immediately helps other people, too.