Lizbethann55, I understand exactly what you are trying to say.
I have never spoken about this before to anyone.
Years ago, there was a huge stigma attached to mental illness and people rarely spoke about it or acknowledged that they had a problem, it was like a dirty secret. Nowadays, people are encouraged to talk about their feelings and be more proactive about seeking support, whether on forums like GN, (The Black Dog Gang) or from medics.
Many years ago, I suffered from serious post natal depression, compounded by larges doses of steroids, I was taking for a lung condition and my mother, a midwife, who should have known better, told me to pull myself together and get on with things! Everyone feels low after having a baby, give yourself a shake. I remember on one occasion she slapped me! 
I was in such a dark place of despair and felt ashamed that I was so weak, but I couldn't ask for help, it just wasn't done.
It wasn't until the consultant who had prescribed the steroids realised how unwell I was and sent me to see my GP.
I was so embarrassed, I felt a failure and my family couldn't understand why I was being so difficult.
To this day, I don't know why my husband didn't walk out.
In my opinion, doctors are far better at diagnosing mental health issues nowadays and that is why we are more aware of it.
I remember my GP saying that it was not my fault, it was caused by a chemical imbalance in my brain. I had thought I was going mad.
Today, I have no qualms about seeking help and saying how I feel. After my recent diagnosis of a serious heart condition, on top of all the other conditions, I could feel those old feelings creeping back in to my head.
However, I did something about it and felt so much better having sought help and being able to vocalise my feelings about the unfairness of it all.
Everyone's experience of life is different, some are resilient and cope really well with everyday life, but for some it is so overwhelming, they cannot function.
Until you have been in that deep, black hole, suffocating in despair, you have absolutely no conception of what it is like.