Second the moneysavingexpert recommendation. You need to do a proper budget, and a money makeover, to make sure you have cut all your costs as much as possible.
If you've never changed your gas and electric, and don't generally shop around and compare costs before buying, there are a few tricks that can increase your income a bit and cut your costs a bit and generate quite a bit extra disposable income, that you should really notice.
When do the payments on the TV, kitchen and lounge suite end? Will things look better then? You need to work towards saving money up so you don't need to put these sorts of things on credit, but you won't know whether this is possible unless you have done a proper budget.
You may also need to analyse your spending to see where your money is going and understand the impact of regular little purchases. Lots of people spend a tenner a day on coffee/lunch/snacks at work, without realising that it works out at £200+ pm or £2/3k per year.
Don't compare yourselves with others. Just like many people are a bit overweight or worse, many people are in unaffordable debt too and it would only take illness, job loss or reduction in hours to get into a proper mess.