If, as one person here commented, you feel there is something broken with your brain, take that seriously. I've read some things about arachadonic acid and depression. And this happens to be an issue I addressed for unrelated reasons. I consciously and intentionally changed my body chemistry to address my health issues and that is likely part of why I am currently not suicidal in spite of being very short of sleep and in serious financial trouble and feeling like the entire world doesn't give a flying fuck about my accomplishments, my situation and so on.
If you are going through major transitions and that is a source of stress, there are more effective means to deal with those things too. I'm too short of sleep to write a book on the topic, I just want to make the point that if you feel something really negative, don't focus on your feelings. Focus on finding the roots of the problem, whether that is solving stressful life situations, addressing brain chemistry issues or something else.
Anyway, this is not something you have to just swallow. And in my experience, the touchy-feely emotional outreach stuff is not real effective. I was suicidal in part due to health issues and in part due to being molested and raped. Healing my sexuality and my body has changed that and I can say that with confidence because I've spent the last 12 days wondering why on earth I am not suicidal while facing eviction, dealing with a mountain of debt...etc...ad nauseum. Instead of falling apart and having histrionics, I am making plans to the best of my ability and working overtime.
Best of luck to anyone struggling with something like this.
I seriously hope you can stay so strong and pull through. Keep on keeping on.