Spiralbloom, that definitely is an interesting theory, and may have some truth in it. However, I do agree with abyss that these difficulties that we encounter in life is more about learnt behavior, environment, choices, etc. I know it's easy to blame ourselves for the depression and the terrible thoughts and mental hardships that we endure and experience, and sometimes it's easier to blame other people or events for this, and sometimes someone or something that is to blame - but through my experiences, I've found that putting the blame on anyone (whether myself, or on something/someone else) for the thoughts of suicide running through my mind, and the desire to self-injure running through my pores, makes everything so much worst. For me, getting better isn't necessarily focused on taking responsibility, or making other people take responsibility, because we can't change the past. But rather, I focus on the present, right here and now, and what I can do to make myself happier... well, it's a work in progress.