When this body will finish, what will happen to me? 

What will happen as I die.

The body I know will become useless and dead

Something out of it has snuffed off.

What is it and and where will it go and do I have control over it?

Do I have control over self?

Why my mind is thinking that I am the body?

I have my mind and I have that body, that is what i am conscious of.

What would I choose, my mind or my heart, when it comes to love?

Heart is never wrong. In its core it is reasonable.

I can choose the type of awareness I have.

I can see how my heart works without violence.

It's  is my heart, my wits, when I start to think that I am not a body.