Hi. I'm sorry you're hurting. Here are some suggestions:
1) This WILL NOT kill you. Always remember that. It might hurt for a long time, but it will not kill you.
2) When you think of all the things you can't bring yourself to do, breath and congratulate yourself for inhaling and exhaling. Good work.
3) Oatmeal and applesauce were the easiest nutritious foods I could eat. You can mix in nut butter for extra protein. I had to feed my little one too, so I spent a lot of money I didn't have on frozen comfort food. It was worth it to me.
4) Play music you love, especially cheerful kind that didn't make you think of him. If everything makes you think of him, find something new.
5) Hide reminders of him and avoid mutual contacts.
6) Educate yourself about alcoholism, narcissistic personality disorders, and abuse (mental & verbal). You are not that rare that you are the only one treated so terribly. There are so many others and sometimes only people who've been through it understand. Find them.
6) Take any of others' or my suggestions you want and leave the rest.