Trying can be a double edged sword.
When I work with patients and they respond to something I've recommended with "I'll try," I almost always know they won't do it. It's a way for them to get me off their back from holding them accountable.
But it may mean that we need to break the goal down into a smaller one that they can really commit to.
I want to hear from them, "Yes, I will do it."
If we settle on trying, at the next visit they'll often say, "Well, I tried." Then, they feel like a failure. I want them to build on success.
With a depressed person, even the smallest goal can seem impossible. Sometimes our goals need to be very, very small in order to have a success to build on.