Too stubborn

You cannot comprehend 
The battle I have to fight
It will never be won 
with weapons or with might
I have already accepted 
The physical war is lost
It took time to come to terms with this
And at a heavy cost
I've already seen those fighting 
the same battle as me 
Fall and already and give up
What you ask is the difference with me
I am too bloody minded
This is how I've always been 
Right back to before I was born
My tenacity was seen
I have fought all my life
I don't know any other way
I know I'm not always right
I understand what you are trying to say
I won't accept a wheelchair 
I will not give up work
I will spoil my children
No matter how much it hurts
Parkinson's will have its day
But it will be when I decide
Because like my mother before
I choose the day I die
It is my DNA
It is everything I am
And this f****** illness
Can try everything it can
Because mentally I will never be beat
I am stubborn and I am strong
I cannot change me now 
Not for my family, you, or anyone