Mindfulness of the world - its being OK

Does mindfulness include being "mindful" (noticing, etc.) of your world, or only sensations like the breath, walking. etc.? So e.g. - being mindful of the other things that I do or do not have to do, rather than the task which is stressing me out and I haven't started yet. I have "pronounced negative symptoms" of schizophrenia, and I badly need a way to be cognisant of tasks (like coursework) without approaching them directly and getting flustered. This may be one way.