There’s a saying that goes, “you can always tell the true character of a person by how they treat the least important person in their life.” Parents, here’s a spin for your kids. “Your true character shows by how you treat your siblings.”
If there is one sibling treating another poorly, tell them this saying and give them the tools for them to change. Focus on the positive in each child and don’t compare one sibling to another. Help your kids develop friendships with one another. Have your kids say something nice about their sibling every day. Have them perform 1 random act of kindness daily. Give more attention to the positive behaviors in the siblings rather than bringing light to the negative ones.
I’ve seen siblings grow up and love each other a lifetime and I’ve seen them drift apart never to speak to each other again. Lay the groundwork for a lifetime of friendship.