My answer to What are some examples of people who never gave up in life?
Answer by Ken Larson:
Thomas Edison is a fine example of what you are looking for.
“INSTITUTE FOR LEADERSHIP FITNESS”
“According to legend, it took Thomas Edison 1,000 tries to invent the light bulb. In other words, he failed a whopping 999 times before he reached success. (Not surprising, considering that he was working on his invention in the dark!)
Soon after Edison revealed his earth-shattering invention, a French reporter asked, “Mr. Edison, how did it feel to fail 999 times?” As the story goes, Thomas Edison just smiled and replied, “Young man, I have not failed 999 times. I have simply found 999 ways how not to create a light bulb.”
In other words, Thomas Edison learned from his mistakes—and he refused to be discouraged by those 999 botched experiments. Most mortals would have given up much sooner. Yet each failure taught Edison something important
that allowed him to go back and tweak the process or switch out the components until he finally got it right.”