I was recently at the latest Rising Star Digital Rochester Event and heard Bob Barto of CGI Communications . He was great. He discussed many things that motivated him and this quote from Calvin Coolidge was one of them.
"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 alone are omnipotent. The slogan 'Press On' has solved and always will solve the problems of the human race."
Coolidge is right on with this quote. If you are persistent and determined no matter what your background is you will be successful. You must be willing to make sacrifices to achieve your dreams and if you are willing to do that and treat people with respect and dignity in the process you will be successful.