He has been 'struggling' with the problem of how to keep good workers from leaving.
She is 'struggling' with her health. [=she is having problems with her health]
She was 'struggling' with the door. [=trying to open the door]
(..) Every living thing in this jungle... is trying to murder the other. Mother Nature's way of testing her creations. Refining the pecking order. War is a struggle. Struggle breeds greatness. Without that... we end up with places like this, charge seven bucks a soda. Do you hear yourself when you talk? (..)2015 Jurassic World