The walls around me have collapsed

I write to you in times of fear
I sit in a room full of light
From the sun
The walls around me have collapsed
Letting in the light
Letting in the sun
But my walls
Are still here, blocking
Whoever dares to try pass them
Even
when it is me who dares trying.
It is cold inside
Even with the sun around me
It is only around me
Not within.
I am cold,
I am fearful,
And
I am writing
to you
In time.