One of the most powerful things a clients can do during counselling sessions is to do some free writing. This involves spending 10 to 15 minutes, sitting in a quiet place, and writing down whatever thoughts are going around in the head.
The immediate impact is that it frees the mind of thoughts that maybe circulating around the mind, you may find clarity about a particular problem, or you may free the mind so you can focus on other things.
Regardless of the challenges that are being faced, free writing is a powerful way of decluttering the mind and gaining some clarity of thought.
Some detailed guidance is in the attached document.