“For a long time I thought I had a severe sleep disorder. But it wasn’t normal insomnia and I wasn’t lying awake counting sheep. I was working and working and working. I was irritable and in constant fear of letting people down. It turns out that I was experiencing a form of mania. I guess my depressive episodes were characterized by having very low energy. I would feel so lonely and sad — even guilty that I wasn’t doing what I needed to be doing for my career.”