What would benefit me?

I'm trapped on this island, 

theres nothing but silence. 

If I had one thing with me,

What would it be?

I could choose my phone or a tree, 

but how would that benefit me?

I think i would take my girl,

the one that shines like a pearl.

She could help me hunt, 

she would have my back and my front.

While we are trapped on this island,

we would no longer be frightened. 

We will have food and water, 

also fire when it gets darker.

She would be by my side,

and I would have a great state of mind.