Beautifully put. To add to that, they need to win against the darkness every time. The darkness only needs to win once.

I lost my brother in law to suicide. He left behind three young children and the harm he caused to his family is immense. He was also one of the more motivated men I have met and a devoted father. For this to make any sense I either have to conceive of a completely altered state of mind, or a pain and struggle that I can't imagine.