There are few persons I believed have exclaimed at their first discovery or at a point when they felt they have unveiled the secret to success. You know that shout of joy when you become victorious at last, ok, I have once done that when I learned some tips to do a book review, but that's intagible compare to people who kept failing but persevered until their big breakthrough; people like Thomas Edison, R. H Macy, Albert Einstein, Abraham Lincoln, Sigmund Freud and Henry Ford.
Thomas Edison was once called dumb by his teacher who believed he can't be anything good, he was fired twice from a company because he was unproductive. Later on, he failed 99 times in trying to invent an electric bulb and at the 100 time, he discovered the secret, I believed he had exclaimed just when he finally made it.
R. H Macy failed seven times trying to open a shop, finally he was able to establish one in New York.
Albert Einstein was said to be unable to walk for 4 years, and couldn't talk till age 7. Abraham Lincoln had several failed attempts in business and politics but persist until he discovered where he had all done it wrong . Sigmund Freud scientific proposal was rejected several times before it was accepted and Henry Ford failed five times before he succeeded.
I strongly believe the above mentioned people must have exclaimed when they finally made it, it was like their years of perseverance and persistency paid. That exclamation of joy like Eureka! Eureka!, I finally made it.