If you've reduced your debt from £25k to £19k in a few months, that's really good going, and means you should get out of debt relatively quickly - couple of years or so?
Hopefully you'll be able to keep the debt on 0%, if any offers run out, just transfer to another - if possible without a fee, they're often available, but in any case, avoiding interest is key.
Have you minimised all your essential expenditure (broadband, mobile phones etc) to maximise the amount you have left for everything else?
Are you being sensible with groceries and other spending so you don't risk not having enough to pay your debts?
If you've been spending on clothes and household goods, do you have anything you can sell to recoup some of the cost? You could allow yourself to spend some of the money you make on things for you so it doesn't feel like you don't ever have anything nice.
If you need any motivation, look at the money you're paying off your debts each month - once you're out of debt, you'll have that money available to save or spend as you wish and will feel much more financially comfortable.
Are you able to increase your income at all, either by getting a higher paid job, doing overtime, or taking on extra work, eg exam marking or whatever you are qualified to do.