I understand this pain, relentless and all consuming. I too live a life filled with pain. Not only mental pain but constant physical pain. I have not had a pain free day since 2002. Sometimes I have felt like I can't go on. I have wanted to give up quite a few times. One thing I have learned is to live one day at a time otherwise it's way to overwhelming. I say to myself I can do this just for today and sometimes throughout the day I say to myself, only four more hours to go. It makes it alot easier to deal with. When it starts to feel like to much try to distract yourself with something you enjoy to pass the time. It will get better it always does. Your whole life isn't a valley you will spend time on the mountain top. Savor that time. Soak in every moment and use that when your in the valley. I hope things turn for the better soon. Always remember you can reach out and lean on someone when you need to.