Hi Joanne/All
In spite of the previous comments I'm not so sure it's quite as simple as that.
You are clearly not insolvent in a cash-flow sense in that you can meet repayments as they fall due.
However you are almost certainly insolvent in an assets/liabilities sense because as you live at home you have few or no assets, unless you have an expensive car or something.
So technically you could be in a position make yourself bankrupt. However this would be fairly pointless not least because of the adverse consequences of bankruptcy but because you would end up paying back all the debt anyway.
Same is true of an IVA. Even if you could persuade your creditors to give you one you would still pay back 100% of the debt, plus IP fees in lieu of interest !
If you're done with credit you might want to consider a DMP (Debt Management Plan), especially if your circumstances change. You will still pay back 100% of the debt and it will have an extremely adverse effect in your credit rating. However as interest is stopped (theoretically at least) you'll still be paying a lot less than under the 'just pay it back' option.
If you want to go that route contact someone like CCCS
www.cccs.co.uk as the private sector is something of a shark pool.
Clearly your debt is giving you stress and there ought to be something you can do.
-Best
'5 years sticking my head into the Lion's mouth of debt !'