I can't help missing it

I feel like I should be somewhere,
But there’s nowhere for me to go.
I feel like I should be practising,
But we’ve already done the show.
I feel like I should be dancing,
But there are no dances I need to do.
I feel like I should be having fun,
But I guess those days are over too.

I feel like nothing’s fun any more,
Not even a tiny bit,
Because the best thing in my life is gone
And I can’t help missing it.