Get the journal to raise emotional control. EC+Empathy is easier if you have twins (or siblings born soon after another) - so when one gets teen mood swing, just spam the 'supportive' conversation options (raises empathy) then have the afflicted teen write in the journal (EC) and have a parent near to encourage both ASAP.
When you get the pop-ups, always take a hit for responsibility (can be brought up with homework+praise) or manners (just set the table or wash the dishes) if possible, because you can bring them back up easily.
