In my view, sleeping around 6-9 hours at age of ten seems decent .It has nothing to do with laziness per se.
Next Steps
avoid having any kind of altercation with your spouse or elders in front of children.
Incase,any interpersonal conflicts are there,consider seeking help from the psychologist and if anyone's is experiencing any kind of anxiety or depression symptom or requires substance de-addiction, consulting with psychiatrist would be of great help
Health Tips
Child learns from the parents behavior. If parents have any differences ,they shall avoid arguing in front of children as they model that behavior and tend to react in similar way whenever they have disagreements with anyone.