Hold your position, plan your governance, and fulfill your duties.
If the emperor does nothing, then what is the significance of having an emperor?
To stabilize the people's hearts?
Don't kid yourself.
The common people don't care who the emperor is or what he's like. As long as they have food to eat, they won't think of rebellion, only harboring the simple thought—endure and it will pass.
Instability among the people is likely caused by the emperor neglecting his duties, with officials below conspiring for their own interests, making it so that people cannot survive, causing chaos.
In a feudal society, while the emperor is the concentration of power, his main responsibility is actually supervising the officials; and the existence of the officials is not only to implement the emperor's appropriate orders but also to supervise the emperor, to prevent him from proposing bizarre ideas.
Theoretically, this model could allow a dynasty to last forever.
But there's a premise—
