"Turning your wheel more isn't the solution to all of your problems if you are failing to make a corner."
You are driving fast, nailing your braking points and then all of a sudden you hit a problem. You turn, but the car starts to understeer. Instinct dictates that you just turn more. Does this work? Generally not. Turning more whilst the tyres are using every last part of their grip won't make the tyres grip any more. There is only a finite amount of grip that a tyre can provide. Sure, this varies greatly with the surface, weather, tyre temperature - not to mention your car's setup. However, when you reach the tyre's limit, the most sensible (and usually quickest) solution, is to slow the car.
The skill that we are developing in this week's training plan is understanding where this limit is, before you get there. If you've hit the limit, and are still struggling to make the corner, compromises have to be made. Compromises foster slower lap times. Depending on your setup and game there are a number of tools and techniques that can be used to help you better understand when you are pushing these limits.
Listen to the tyres. Sims are notoriously good at allowing you to tweak options to suit your preferences. Just by increasing the volume of the tyres, you'll have an early warning sign when you are at the limits of the car. Secondly, depending on the wheel that you are using you'll be able to feel when the tyres are struggling for grip. If the wheel isn't providing the resistance that it normally does on a given corner, this is a good indication that the tyres are losing their grip.
Practice a few laps and push the limits of the car. Turn the steering wheel excessively and start to learn what noises and feelings are provided by your rig setup; this way you can train yourself to use this information to avoid expecting too much from your tyres.

As shown by the steering wheel movement, it is easy to tell when the reference lap is able to make a corner with less steering angle than the driver. Excessive movements will the be determining factor as to whether the training has gone well or not. Remember: the car is more efficient and therefore faster when it is able to use its grip for acceleration (longitudinal grip) instead of lateral grip.