OP - I wish you all the best with your plans to become debt-free. Well done for taking that first step!
I think it is a really useful exercise for anyone to do - to audit what you are spending money on, and see if you can reduce it, whatever salary level, or financial status you are. Going through bank statements etc to see where the big spends are, or the regular, smaller spends, that just add up to a large sum of money over a year.
When we are cost-cutting, I set myself a target of expenditure to reduce in the year, and do a spreadsheet listing things and sums, and it can be really satisfying (which helps off-set the feelings of having to deny yourself, or reduce). We also tend to do things like save up for something and buy it outright, rather than buy it with monthly payments (which works out massively expensive). Also ‘brand new’ is not your friend - so we have always bought secondhand phones, cars, furniture etc
And it is also very good for the environment!
Reducing number and type of holidays, switching to just small presents for adults, and cutting back on budgets for kids presents.
Re: Driving lessons for kids - depending on where you live (and whether good public transport), this could wait til later, til they are earning and can pay themselves.
Also, making others aware that you are cutting back would be a good thing, so you don’t get peer-pressured into doing things that blow your budget for months.
And always operating a ‘cooling off’ period, between the time you decide you want to buy something, and when you actually go and buy it. Maybe a month? So you can actually decide if you need it, before you buy, and maybe the desire to buy will go.
It can really help to have a massive clear out of your house as well, to get rid of lots of clutter; as your mindset shifts, and you realise that each new object that you bring into your home is just more clutter, and can become a burden on how calm your house feels.
I’m sorry if others have already mentioned all the above - but good luck anyway!