I've been driving the California coast for the last 2 days and have been on a few of the most rediculously windy roads in our travel (not creeper) Van. You can't get much more of a defined path then that but the thing I payed attention to and realized how this applies to all forms of driving is the visual element.
The ability to quickly analyze a corner with all the variables and translate that into braking, steering input and acceleration to have the fastest, smoothest outcome is a huge task that, ultimately comes down to feel, reflex and instinct. You can do all the math you want to find the perfect inputs on a track or road but until you get the "feel" and "visual elements" of the whole deal and are able to translate that into action, you're wasting your time.
Save the pencil lead, get seat time anyway you can. Watch YouTube videos of the fast guys on as many tracks and cone courses as you can and get a racing game that teaches you the line.
You can and must develope the instinct if you want to go fast and that takes practice not paper.
Leave the math to the nerds.
It is what it is and it ain't what it ain't.