I try and minimise the outgoings. I have a calendar reminder on my phone to check the best deals for my utilities and insurances about a month before they're due for renewal.
Best thing we did when I was working part time was to take advantage of the Married Tax Allowance.
My local council allows you to pay your council tax over 12 months which whilst it doesn't reduce the annual amount due spreads the monthly cost and doesn't lull me into thinking "2 free months, wayhay more money".
My bank (hsbc) has a projected balance facility. After we have been paid and the bills have been debited we look at the projected balance and transfer that into our hsbc savings.
DH has an employee benefit which allows him to buy vouchers at a discounted price. Eg he will buy a £200 voucher, but with 4% discount it only costs £192. We regularly buy Tescos ones and do our food shop with the vouchers.
Everything else we buy goes on my credit card. Then when the bill comes in we take the money from our savings account (so it has earned interest whilst waiting to be used).
I also save into an ISA which only has a passbook so means a journey into town to get money out and save into premium bonds (I get a small win most months).
The best bit of advice that I had from a mortgage advisor was when you reach the final years of paying your mortgage is not to transfer to a new lender when a fixed deal comes to an end, because savings made on monthly payments are outweighed by transfer costs. Look at the best deal with the existing lender. Then overpay.
On the last year I have managed to buy a brand new car. Paid in full. Our next big expense is roof and chimney repairs. We have the cash ready.
Finally when it comes to spending is identifying the difference between WANT and NEED.