I feel like I cut out a lot years ago, before the COL crisis. E.g. shopping in aldi, on ebay, no nails, making own lunch, only have a takeaway during the week once every few months etc.
More recently I've reduced my "Saturday fun day" spend, which used to be going to the pub for a couple of pints, getting a coffee out and buying a hot lunch on the market. I just make a fancier brunch at home now.
I do treat myself occasionally, but not "regularly" for example, I'm going to the theatre in London for the first time in two years. I've been on holiday abroad this year. I would rather splurge on bigger memorable things than buy a coffee and a cake everyday, or get my brows, lashes and nails done every month - that "maintenance" stuff really adds up!