I have a salary sacrifice directly to the credit union at work, so money goes straight to my savings before I get paid into my regular bank account. I try, whenever I get a pay rise (promotion or otherwise), to let myself enjoy it for a couple of weeks, and then increase the salary sacrifice to continue to "manage" on the amount I was getting before the rise, or just a little more, if I can afford it. credit union savings are mainly used for easy access for Christmas and holidays etc.
I set up a monthly direct debit for another savings account - so treating it like a bill, as someone else mentioned. That is intended as more long term savings.
I put any coppers into a savings tub at home, and exchange it into a savings account rarely as it is very slow to build up.
I put bigger coins into a money bag in my car, to use for parking meters etc, and also to feed DD's purse when she needs money for school etc.
I try to be relatively frugal in certain things- I will use discounts and vouchers if I have them, and bulk buy if possible for better deals. I do make use of loyalty schemes. I batch cook and fill the freezer, and will buy decent yellow sticker items if I have freezer room. I grow some of our own veg. I will reuse and repair items before going straight to replacing them - shoes get reheeled/resoled, clothes get mended, etc. I have made a fair amount of our own furnishings over the years - curtains, cushion covers etc - (and often gifts for others too) and we are handy enough on DIY/painting and decorating skills when necessary. So all those add up to spending less - sometimes to live within a necessary budget, and nowadays, allowing us to save more and sometimes spend more on fun things.
I also use charity shops. If I see something that is useful TO ME and that I know I will make good use of, I will buy it. But I also have no problem with spending on good quality items if I know that I will make use of them, rather than a lower quality item that I may need to replace a lot sooner. See Terry Pratchett's explanation of Boots (someone else posted it again this week on a similar thread on MN). Like one really good coat that has lasted me over a decade, rather than 3/4 cheap ones (which would have fallen apart and now cost more than the original coat cost me). Or just having a couple of higher quality items and using them all the time rather than a large bundle of cheaper ones (like my winter thermals - 3 good (and thin) ones means I can wash and wear, and keep my less warm clothes working well all through winter rather than needing an extra whole set of heavier jumpers and heavier winter workwear).