Indeed, some advice that I found particularly good, was to not look on the road ahead for a breaking point, instead look to the apex of the corner, and focus on the speed that you need to be doing at that point.
I found that I was braking too much into corners and then had to accelerate to find the maximum corner speed, which can disrupt the balance of the car, and cause problems when exiting the corner (and even more problems in a chicane). This was purely because I was too focused on where I was braking, and not focused enough on where I should be when I exit the corner.
Also, take a look at some World Record replays - you will notice that they all tend to have one thing in common; if the car isn't accelerating, it's braking. There is no in-between. The in-between is called coasting and is regarded as being "not in full control of the motor vehicle". That isn't to say that you should either be fully on the accelerator, or fully on the brake - no way should you be - but at any one time (other than changing gear) one of these pedals should be being used.