Studying about how to do it can be helpful, but real success requires practice and experience. There is an element of luck involved. Weather can have a huge influence on the results obtained. The additive effect of small mistakes can be huge. There are many different products you can buy in an effort to help you get better results, but a real expert only needs a few basic items in order to excel.
Some people seem to have a lot more natural ability than others.
There are lots of different ideas about proper techniques to use. Some techniques work well for some people but not for others. Success requires continual close observation of the present situation, good judgement as to what course of action will be the best to take next, and skillful execution. No matter how good you are, there is always room for improvement. Maybe it requires a good deal of exposure to both grazing management and golf to fully appreciate the similarities between the two, but at the very least it should be clear to almost anyone that it's more difficult to find so many ways to relate grazing management to other sports.