You could say I’m sad:
Sad for all the friends I could have made,
All the wonders I could have felt.
Sad for all the smiles I could have seen,
All the days I could have loved.
Sad for all the things I could have made,
All the dreams I could have dreamed
But maybe what I had was enough for what I need.
Maybe what I saw was enough for what I feel.
Maybe what I dreamed was enough for me to reach.
This world will be back again to love in.