I'm definitely not a parent, but the best things I'd do are among the following
Shielding their eyes from things on the internet, such as adult sites, etc.
Keeping a nice sleep schedule both to calm me and he/she down for school.
Keeping up with their basic needs such as food, water, shelter, etc.
Teach them respect through anyway (except for disciplinary esc action).
Answer: spells out the terms for success, and knowing exactly what you want to accomplish goes a long way.
Explanation:
Relaxing rules before they trigger aggression
