New Souls

I recently had a talk with a good friend about New souls.
This beautiful, refreshing light brought into this world.
Free.
Pure.
Untainted by trials of past reincarnations.

Now, my question is, are these people truely new souls, or are they the ones who have learned to process.
Ground.

Why can we not be happy for those who have found this inner stillness?

Do we return to this life with a bitterness towards those that have learned, and are on to other lessons?
Because we cant pay our price?
Because we cant sacrifice?
Because we cant learn to let go and move on?