HOW MUCH DO YOU WANT IT:

The story is told that a young man asked Socrates how he could get wisdom.
"Come with me," Socrates replies. He took the lad to a river and shoved his
head underwater. He held it there until the boy struggled for air.
Then he let him go.

Once the boy regained his composure, Socrates asked him, "What did you
desire most when your head was underwater?" "I wanted air," the boy told
him. Socrates nodded slowly. "When you want wisdom as much as you
wanted air when you were immersed in the water," he said "you will
receive it."

Source: (book) The Power Of Your Subconscious Mind.

"If you care enough for a result, you will most certainly attain it." - William James.

"We are told that talent creates its own opportunities. But it sometimes seems
that intense desire creates not only its own opportunities, but its own talents."
- Eric Hoffer.

"The starting point of all achievement is desire. Keep this constantly in mind.
Weak desires bring weak results, just as a small amount of fire makes a
small amount of heat." - Napoleon Hill.