Don't panic OP, lots of us are in this position but it is fixable and there has been a lot of useful info on this thread. For me it's been coming to terms with how irresponsible I've been for a start, I'm really ashamed of how I've handled money. I used a 0% credit card and then life happened and I ended up with 4 more, mainly from moving debts around and switching once the 0% deal ran out. The other thing I did was after I'd moved debt over I then used the credit card again on an interest free deal and the whole thing just got out of control. I wasn't really thinking about what I was doing at the time, then I realised I was spending more than I was making and I had to take action.
For me the best way has been to take out a consolidation loan over a fixed term and at a fixed rate, so I know what my payment will be every month. I paid off the highest interest credit cards first and then the ones with the highest monthly payment out of my bank. With those 3 consolidated my monthly payment reduced by £150 which has made a massive difference.
Then I focused on the cards which were left, consolidated 2 of them and left the third which was the lowest amount. I've upped my payment to the 1st card to cover the consolidation and a bit more, then worked out how many months it'll take to clear the 3 debts - one is 12 months and the other is 18. So once they have gone I'll just have the loan payment to pay off, I'll save alongside my monthly payment and then pay a lump sum off it so that it doesn't run the long term I've taken it out over. I am paying interest, and will pay a fee for early settlement if that happens but the difference is that it's organised and predictable.
Next I have cut up my cards except for one, the one which shows up on my online banking so I have to see when I've used it every time I want to check my bank account.
Facing up to it is the key, you'll be ok OP and once it's all paid off you'll feel really good. Remember that you're not on your own.