Shitsuke is about maintaining the improvements done in previous steps. It is about self-discipline to maintain or sustain the changes.
Methodology of Shitsuke:
Monitor the refine the methods consistently.
Maintain the defined methods for continuous improvement.
Establish norms and follow them.
Keep repeating the 1 to 4
Benefits of Shitsuke:
Discipline in the system.
Waste reduction.
High morale.
Neat and cleanliness.
Easier to work.
Lesser stress at work