Freepath, great choice of quotes.
Continuing the general theme here are some from Napoleon Hill
Every person who wins in any undertaking must be willing to cut all sources of retreat. Only by doing so can one be sure of maintaining that state of mind known as a burning desire to win - essential to success.
It is always your next move.
It takes half your life before you discover life is a do-it-yourself project.
Most great people have attained their greatest success just one step beyond their greatest failure.