What is Grit?

Grit is the secret to success, conclude Linda Kaplan Thaler and Robin Koval in their new book Grit to Great.

They say grit has four essential components.
Guts—the courage to take on a tough challenge
Resilience—the ability to stay focused and motivated
Initiative—the quality of that leads you to be a self-starter
Tenacity—the relentless ability to stay focused on a goal

Fayteen and I think Resolute Women have grit.
–Joy