I plan on teaching my nephew that they are not always going to be the winner in everything.
What is your reason for wanting to teach them this?
I think it is an important lesson to learn.
It is good to teach kids how to deal with failure. You can try to teach them kind lessons and show him how to overcome things.
I'm teaching him that losing is bad and he should cry until he gets what he wants.
It is a great idea to let your son know that they need to be resilient. However, your son is probably going to have to become resilient on their own by overcoming challenges.