We are naturally selfish beings; it’s important and often valuable to have self-preservation as an inherent trait.
People do things that positively impact them in some way. We tend to do what’s best, or seems best, for us, and hope for good things to happen. We put ourselves first.
Seeing oneself as #2 in your own world is really, really challenging. It’s also a key to being a great team member. Find ways and times to force kids to put themselves second to something, anything, anyone. It’s great practice for team membership.