four are a lot. Try to take them outside if possible, they can use their energy there, be happy and you are more spacious. Things l am thinking life fishing, picnic where you can sip a coffee and they can run around...
It is intense to have that vibrant energy around you daily.
Take intervals with your wife, so each will get few hours per day in peace, if the space permits it.
If your income make it possible, you could even hire some person to do creative time with them, few times per week.
Try to engage them in activities using their hands like baking, chopping wood, caring for plants. That makes them more peaceful.
If possible, you could even create a game room in the house, or some space outdoors and make it interesting so they hang out there.
These are few of my ideas, I don't know what else...
