Why don't you think about some of the experiences you could offer, and pitch a few different ones to Heather? You can talk about details with them once one is accepted. You could write about your experience with self-harm and overwhelm, your experience in disability services, your experience with finding coping mechanisms like music and somatic therapy, or something else, if you are called to write about something else...it would be ideal for it to be some kind of honest message of your experience but not one that has to get into the details of everything, but a piece that others could generally relate to. Does that make sense?