The goal is to reduce the size of the increment to smallest number (chunk of
valuable work).
This will ensure that
focused value can be delivered rapidly to the Product Owner by the scrum team within
each sprint, and, trying to do too much, will not be carried over.
See if you can get these concepts below:
I.e. is Milestones (Sprint Goals) are difficult to achieve...
possibly Inchstones (pebbles) should be used...
Use the burndown chart to get a handle on
(towards improving / stabilizing)
your team production stats (sprint by sprint)!