Grit is the persistence in following your own destiny

As you run towards your desired destination, if you turn to look behind and see no one running with you, keep running: because it's evident that you have no competition and therefore, you are destined to get to that destination.

Nothing in life is stronger than perseverance; time only promotes it, failure is afraid of it, negative people hide from it, and disease is affected by it. Even rocks give way to perseverance: because if water perseveres its impacts on the surface of a rock long enough, the rock starts to wither.

You are only susceptible to break easily due to occasionally bends if you are inflexible

Optimism doesn't make you more persistent. Persistence makes you more optimistic.

Persistence Pays...Period.