I know how you feel.
It's so hard because that feeling leads to binging (for me)... and then the binging will lead right back to that feeling. It's like a never ending cycle. It's horrible.
I especially felt that way this time last year. I couldn't motivate myself to do anything. Sometime before christmas the binging got especially bad and I realized I had to do something. I had to pull myself up out of that deep dark hole I'd fallen down into. It was up to me to seek help, to open myself up, to reach out to those other people... I had to learn to accept myself, this place I'd landed and those horrible feelings I had towards myself before I could even think of changing the stuff I didn't like about myself.
I can only describe the difference between this time this year and this time last year as the difference between being turned on and being turned off. It's like I've flicked a switch and I'm so much more aware and so much more able to make the changes I need to to be... not necessarily happier but better. Every once and a while last year's me is here (well she's here all the time) but sometimes she takes over... but usually I can resist her.
That's my story in a nut shell. I hope it helps. It's not bragging or anything. I just want you to know there are people where you are and who have come a little ways, and so can you. It's a struggle. It's tough. But at the same time the feelings of pride I feel that I'm slowly conquering this "demon void" is something I remind myself of everyday.
Good luck to you. You know you can do it. Just believe.