I dont think anyone has mentioned LOTS and LOTS of practice. Go to the track on days when its not busy. Having to not marshall your own car teaches you how to drive correctly real fast lol. You can also test and tune. Learn what change to the suspension do what. Try different racing lines.
I go to the track when no one or little amount of people will be there to practice so I can focus on the above without the distractions.
Just get out there and practice, everything will fall into place, sooner or later.