Persistence:

"Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination are omnipotent. The slogan press on has solved and always will solve the problems of the human race." Calvin Coolidge

Patrick Williams at The Selling Sherpa writes:

“The big difference between those who excelled and those who did not was the ability to keep going back.”

Yoda advises “Do or do not, there is no try”

The only mountain you can not climb is the mountain that you do not climb. The only restaurant you can not open is the one you do not open. Persistence is the most powerful force on the planet, it has no equal because so few are willing to put forth the effort it mandates.

To excel in life or in restaurants one must master Persistence!