After that, I feel obligated to contribute something actually useful.
Look ahead. No, further ahead.
You want to be thinking about 2-3 seconds ahead of where you are now. You should know where your corner exit is before you get to the corner entry braking point, so you know what the total arc you want to drive is and how much you need to slow. If you can't see it, imagine where it is using other cues (distant tree in line, clump of weeds sticking up, memory and dead reckoning).
You want to be driving PROactively instead of REactively. Drive the car to place it where you want it, rather than letting the car drive you. To do that, you need to continuously plan out the next several seconds of regular inputs, plus what extra inputs/corrections you might need. Cresting a hill at the apex? Plan on not just driving the line, but the chance of the car getting light in the rear and maybe needing to countersteer, and think how much countersteer you may need and how quickly the car will recover to avoid a tank-slapper. Or maybe the front tires will wash out over the crest and you need to unwind the wheel a bit to recover from the understeer - how much, how quick? And each lap through the same turn could be different depending on entry speed, tire grip, track temperature, someone ahead putting two wheels off and kicking up dirt, etc. It's making these multiple little game plans multiple times per lap that lets you "get ahead" of the car and be as smooth and fast as possible.