When I'm on a field
I can be free

When I'm with my family
I can be free

When I'm with little children
I can be free

When I'm with animals
I can be free

When I write
I can be free

...

But when I'm anywhere else
I'm constrained by
a cage known as-
self consciousness
social anxiety
shyness
She comes by many names
...

By any chance,
are you familiar with her?