I think a lot of us have been in this position, I used to earn a lot but had no savings.
What you can do is make that spreadsheet up.
Eg a paper and a coffee every day isn't unusual for lots of people but £4 a day Monday to Friday is over £800 on a 48 week working year.
So, once you know where the frittering is happening, (and lots us have frittered over the years), and stopped it eg packed lunches and a travel cup of filter coffee every morning you can move onto the bills.
Got Sky? Virgin Tv? How much do they want to keep you? Enough to halve the bill? Ring up and tell them you need to cut back. They'll put you though to customer retentions who will offer you a cheaper package. Haggle. They offer you £50 you say £40 would make all the difference, I love my sky tv but its so expensive etc etc. Same with BT, although I had a major fallout with the girl I got through to as I REALLY wanted to cancel.
Basic energy saving such as switching off lights, turning the hot water thermostat down to 60, insulating the loft to 270mm, lagging hot water pipes and draught proofing do help. I have two jackets on the hot water tank because it used to be tropical in the airing cupboard when we first moved in.
If you ring the electric/gas provider are you in credit? You might have some money in there they can pay back to you. Don't fall for the "that's to pay for the expensive quarter", if you've overpaid they can pay it back.
If you have a water meter look on the water boards website for free water saving devices. I got a shower insert, a tap insert and hippo bags for the loo free of charge. Just putting tap inserts in the old house saved £20 and that's with two of us out all day, a family with kids washing their hands numerous times a day would save more. If you have a garden get a water butt in Aldi, there £20 but its free water after that. If you have a child with a medical condition and they require frequent bathing is there a discount for that? It's worth asking the question.
I would also say shop at Aldi, dh doesn't like brands anymore if I buy them, he says well that wasn't as good as the Aldi one. If he ever finds out we have sainsbos smart price tea I am in serious trouble though.
These threads are good.
www.mumsnet.com/Talk/credit_crunch/1600030-Small-money-saving-habits-petty-even
www.mumsnet.com/Talk/credit_crunch/1543785-your-top-tips-for-money-saving-and-a-more-frugal-life
www.mumsnet.com/Talk/credit_crunch/1628874-Gas-Elec-Bills-monthly-and-SKY-so-angry
Register with topcashback, I got cashback on my car ins this year, £150 for fully comp. £60 back for a Sony smartphone that costs £7.50 a month. It all adds up.