Go for it , Rukia, a day at a time. If you liked to write when you were young and you feel your writing has been numbed down by drugs, apathy, lack of practice, etc, its going to be frustrating at the beginning. But if you practice everyday , some of your writing style comes back to life and its exciting and moving to see sparks of it suddenly popping back. And it does wonders to be busy and feel productive at least a couple of hours a day.
I read " The center cannot hold " years ago. The first thing I remembered about the book after I saw you mentioned it was she saying that her uncle ( her mothers brother if I remember correctly ) killed himself after years of suffering from mental illness and how much she regretted with time not going to her uncle's funeral to honor his fight. It something that moved me when I first read it.
Imho, there is a need of first hand accounts regarding mental illness. If its tragic, its always parents talking about their kids, sisters or brothers about their siblings, psychiatrists about their job or mental illness in general, etc. Even if you are lucky and you find a compassionate psychiatrist with decades of experience treating mental illness, if you spend enough time with him you get the feeling that they get it but they dont. Nothing beats being there.
