What you need to remember is that you have contacted them with the information, they didn't assist you in the best way and consequently you spent what you thought was your's. Mistakes happen, they cannot send you to the gallows for it. I have been in the same situation regarding the not sleeping, when we don't sleep our emotional state deteriorates significantly and we therefore don't see the logic in any given situation.
If you have attended counselling before I would advise you seek to return for some support and guidance during this difficult time.
Not only are you bereft from losing your job, you are also dealing with loss of identity and trying to deal with your mental/emotional wellbeing. These events are enough to send anyone spiralling.
The creditors can be very sympathetic if you make them aware. They cannot help if you don't inform them.
Our overall debt was £52K, the payment accepted was £18k which was made up mainly from £14500 PPI refunds.
We are so very good at giving ourselves a hard time, what you must remember is you took the correct steps in order to correct your debt situation. You have made payments to pay off some of the debt. What more can you physically do? Worrying and not sleeping doesn't solve anything, it just makes us more vulnerable & very poorly.
Think about the positive steps you have made. I used to panic taking my kids to McDonalds thinking that if they checked my bank statement they would see that I'd spent money which wasn't on my I&E
Totally unnessecary when I look back. First things first contact your IP, I broke down in tears when I made the call. They were very compassionate given my situation. Explain as fully as you can, give them the figure you wish to offer as a F&F, if they say no then they will HAVE to arrange a variation meeting as you have no surplus to offer them anyhow.
Take some deep breaths, bin the negative thoughts and challenge them with a positive.
Good luck and keep us posted

**23'04'14 - IVA Complete F&F Agreed with payments made to date oh and a fat PPI reclaim helped too. Completion Certificate received 23'10'14 ** After a couple of years of waking up and 'surviving' the day I now wake up and 'Live' for the day!!
**Any comments I make are purely my own opinions**