In horse training or natural horsemanship, Approach is nothing more than a technique or method used in helping your horse to understand what it is you want him to do.
I feel it's important to point out at this time that one of the major reasons people fail to achieve excellence with their horse is that they are not mentally, emotionally and physically fit. The way to achieve this is by being persistent and consistent in learning and practicing your horse training / natural horsemanship skills. Remember, It's not your horses fault, it's your responsibility to be fit if you're to achieve success and excellence with your horse.
In talking about Approach or techniques, we'll use some examples to point out some approaches people take in working with their horses, which are very different from natural horsemanship.
Let's talk a little about longeing