i agree with the point made by Caroline. this is how I see it
say you have a goal (40,000 feet) of financial security and an area of focus (20,000 feet) of finances. this could have a project (10,000 feet) of upgrading your retirement savings plan. your next action (runway) might be to call the HR department at your work to find out about the options available.
next actions tend to be more specific than what you might call a task in other systems. (In the above example if you didn't know who in HR handles retirement plans you true next action might be to ask the colleague nearest you if they know).
by the time you pick up the phone to call HR you are, by definition, on the runway.
thinking through the higher levels (particularly during your weekly review) is how to keep everything in balance.