Braking technique is definately something you have to learn and practice. A useful concept to use is to regard traction as a limitted resource. The amount of traction depends on your tyres, pressure, road surface (sand/oil/water), camber, slope etc. You need traction to accelrate, steer and brake and balance and when it runs out you usually slide or fall.
When you are reaching the limit of traction ie just before your wheels break out and slide, you have a number of options:
Reduce braking power.
Reduce the radius of turn
Use camber to increase traction

With experience and practice you can usually sense the limit od traction and act. Very occasionally, even old dogs are taken by surprise and take a slide.

There is an article on traction kicking around the interweb somewhere, I'll try and find it again.