"Mom, Noah won't give me my toy to play with. He is being mean to me,” Lucas whined from the playroom, and I rolled my eyes at their antics. My boys had to be the greatest troublemakers, and they were equally stubborn.

"Noah, give your brother his toy, don't be naughty," I scolded from the home studio. They had a playroom across the hall, so I had to keep the door open when I was painting in the studio.

"But Mom, I want to play with it" I could hear the pout in his voice. Noah had exactly the same toy, but he always loved to play with his brother's...