I often find difficulty braiding more "pleasant" words. I don't know if it is because I have a trauma background from a very early age and have struggled with brain health my whole life, but joyful, inspiring words are "work" for me.
The darker, disturbing passages just come to me, almost like gifts..akin of blessing. I barely even give thought, I just funnel them to page and they create themselves. 
Do you feel getting healthy changes your writing/artistry?