Sometimes we have to dismantle a problem until we find the likely cause. Let's say, for example, that we have a wobbly chair. We could shave a bit off one of the legs until it is even or even shore it up with a little wedge but it might be a good idea to look underneath. Here we might find that it is standing on a rotten floor board. We could rip that up and replace it with a new one but we might need to ask why it went rotten in the first place. That might reveal a bit of damp or a definite drip. We could switch the water off at the stopcock but that might be inconvenient when we want a shower. So in the end we discover that we need to do some soldering on a pipe or replace a perished o ring ... and so it goes on. Everyone has had Saturdays like that! Quite often helping horses is just like this and it's not just a case of dealing with the most obvious behaviour - quite often it is a symptom of an underlying problem or gap in the horse's education.
