I gave it my best effort I hope I didn't miss the phrases that don't translate literally into English. Thanks for your help with this.
L’APPUNTAMENTO ~ ORNELLA VANONI
Ho sbagliato tante volte ormai che lo so già
che oggi quasi certamente
sto sbagliando su di te ma una volta in più
che cosa può cambiare nella vita mia...
accettare questo strano appuntamento
è stata una pazzia!
The rest
here
I’ve been wrong many times before that I already know
That today almost certainly
I’ll be wrong about you once again
What can I change in my life
Accepting this strange appointment
It is sheer madness
I am sad among the people
That I am passing by
But the nostalgia of seeing you again
Is stronger than tears
This sunlight lifts my spirit
A sign of hope
I am waiting when all at once
I see you coming in the distance
Love, be quick, I can’t resist
If you don’t arrive I don’t exist
I don’t exist, I don’t exist
The weather changed and it started to rain
But I say and wait
It isn’t important to me what the world will think
It won’t make me want to leave
I look inside myself and wonder
But I don’t feel anything
I am only a remnant of hope
Lost among the people
Love, it’s already late and I cant resist
If you don’t arrive I don’t exist
I don’t exist, I don’t exist
Lights, cars, windows, streets
One and all were mixed up in my mind
My shadow grew tires of following me
The day slowly dies
I won’t stay so that I can return to my home
To my sad life
The life that I wanted to give to you
That you crumbled between your fingers
Love, pardon me but I can’t resist
Now and forever I don’t exist
I don’t exist, I don’t exist