One way to learn to maximise your ability to deal with oversteer consistently every time is to always have a central focus of the upcoming task well in advance because with driving fast on a track or a road, everything happens extremely fast for the average person, so any method to slow this perceived experience down for the driver is absolutely essential.
To properly grasp this concept, it's always best to practice with a car that is slightly unstable under braking, mid corner and on acceleration.
So for instance, if the car is a bit unstable under braking like in the wet, the central focus as you go flat out down the straight needs to be what way you are going to produce the turn-in for the car, so you ideally need to be looking a bit beyond the turn-in point with peripheral vision, but you need to also record your braking point too, to properly synchronise with this operation.
With ABS, you can afford to brake much deeper into the corners and can afford to look further into them too, typically way beyond the turn-in point this time, but again with peripheral vision. As the car enters the corner, you ideally need to begin looking beyond the apex and for the exit rumble strips, and very shortly before acceleration, looking beyond the exit rumble strips in order to try and predict what the car is going to do possibly a split second before it happens. This is very important and one reason I think many are having snap oversteer issues other than the iffy physics, is because no one has complained about the driver and lap time lists which interferes with our ability to do this reliably in races.
To get into this mode routinely can take many months at least, but it can be done.
Edit: To simplify things as much as I can, a car only ever does two things; forms a straight line or arc between two points and given that both these trajectories also form any operation (braking deceleration on entry, acceleration on exit) around a race track as well, the way to look at it is to always be looking beyond that straight line or arc before the car itself has actually done so.
Braking point to turn-in point forms a straight line
Turn-in point to apex forms an arc
Apex to exit kerb forms an arc.
This is my interpretation of it, and I'm sure many other experienced drivers have their own way of reading a track for the desired outcome.
Establishing turn-in points can be difficult in GTS because there are no clear rubber marks, so I often use the inside kerb together with the approximate braking point to get the the turn-in point, so as not to have to look for the clipping point in a panic.