It is very easy to know the path, especially in today's society.
Our mind can set a deceptive trap for us where we actually KNOW the path to such a point, that we THINK we are walking path, when in fact we are spinning our wheels and going nowhere.
You have to actually put in the mental and physical effort to WALK the path. You can KNOW the path sitting on you couch researching and reading, but you can't WALK the path with the same amount of effort; you must move forward.
Walking always entails taking action, where knowing only entails thought. You have to have BOTH.