FINISH is the final ‘F‘ in S.T.U.F.F., FINISH what you START.
Just like the Thanksgiving example from START, you wouldn’t leave the dishes everywhere after the meal. You would FINISH putting the food away and do the dishes.
The process of de-cluttering is the same, FINISH the area you started. With successful results, you can define another area of clutter that you will process within a reasonable period of time.
Think about it like Newton’s Second Law of Motion: A body in motion will remain in motion long enough to clear the clutter.
For more information, review the BONUS STUFFologist’s Guide of (click on): STUFFology 101 on Amazon.com.