Don't grow up.
It's a trap.
Peter Pan stays in Neverland because he refuses to grow up.
There are no adults in God's Kingdom: only God's kids.
To grow up is to leave the Kingdom.
Growing up: the responsibilities, the world-weariness, the obligations, the furrowed brow, the wrinkles, the tiredness, the insomnia, the unceasing activities, the chemicals.
Grown-ups will visit Neverland for a while, but look haunted, knowing they no longer really belong, that their heart left long ago.
Eventually people stop coming to Neverland.
And they grow old and die instead, rapidly.
You can live forever ...
... if you refuse to grow up.
By remaining God's kids ...
... and helping the rest of God's kids get their heart's desire.
If Hook is not defeated in Neverland, he will come after you wherever you go.
The Lost Boys will not be able to help you there.
Neverland is the only place he can be defeated.