I wondered why 'je vais me battre à' is not as acceptable as 'je vais avoir du mal à' for 'I am going to struggle'. Perhaps not as colloquial?

Hi Richard, 

In that context it is not correct to use 'se battre' as it is 'to fight'.

You might say -

Je vais me battre pour obtenir une réponse positive = I am going to fight to get a positive answer

But it is not the same as to struggle/ find it hard to do something.

Hope this helps!

Hi Richard,

both -

Je n'irai pas au travail 

and

Je n'irai pas travailler 

are given as possibilities for 

I won't go to work

Bonne Continuation!