Paano maiiwasan ang rivalry when it comes sa mga anak ? Ano ang dapat gawin kung nangyayari na ito sa bahay between your kids?

In most families I know, there's really rivalry among the children. I believe the biggest factor to this is the upbringing within the family. Among us 3 siblings, I can say that we grew up with no rivalry because both my parents never made anyone of us felt insecure in one way or another. i really don't know how they did it but I'm just so amazed. I grew up seeing them that they really did everything they can to provide for each one of us and give the attention needed by every child. I know this rarely happens and I'm thankful that we are part of the few siblings who don't live in envy with one another.