One key difference between discipline and consistency is our will/desire. It is easy to be consistent with something you have a great desire for. If you love ice cream it takes little effort to eat it every night. Discipline requires consistency but discipline is more than being consistent. Discipline is a bending and training of our wills and desires through doing things that aren’t already second nature. This is why eating ice cream has yet to make it on a list of spiritual disciplines.
For many years, my in-ness or out-ness varied moment by moment…even second by second based on how well I performed