I think of willfulness as defiance, stubbornness, unwillingness to change, wanting to stay in the same pattern, same rut and not wanting to put forth the effort to truly do the work involved in making good changes......willingness is the opposite of those things, involves a humility, grace, patience, desire to change, a WILL to change and a WILL to do the work.....In me, sometimes there's both, and a bit of a fight between the two! I want willingness to win, because I know I NEED to change and I NEED to do the work if I AM going to change, hard as it is....