Quiet determination

I am reading a great book right now called "Quiet: The Power of Introverts in a World That Can't Stop Talking" by Susan Cain.  One of the phrases she uses to describe an introvert is that he has a quiet determination about him.  We introverts are like that as we often hold strong feelings but those feelings are not easily seen on the surface.  We know what we want and are determined to get there.  There is a sort of steeliness to us and we set our face like flint.  All the nonsense talking that goes on out there we can live without as it is too surfacy.  We like deeper conversations.  We would rather problem solve and toss around ideas.  We want to win, we want to get ahead but we don't want to crush our competition or hurt someone in the process.  It isn't that we think we are better than others.  Believe me, we are very aware of our weaknesses.  There is a sort of protocol or process that we would prefer to take to get to our goals.  Being ruthless, narrow, and impolite are not the pathways we want to take to get ahead.  When I read "quiet determination" in Susan's book, I knew I wanted to grab that phrase and use it as my own.