I only have black socks now. I like different coloured socks but unfortunately they are a nightmare, always going missing, needing to be paired up, more trouble than they are worth so about 5 years ago I just changed over to black only and it's made things a lot simpler.
Also:
No ironing
Only clean with washing up liquid
No junk mail (in a different country so have a special sticker on my letter box to refuse it)
One in, one out rule
Do a large shop in Aldi and the Boots equivalent here once every two months and that's it - very occasional top ups needed from the local supermarket.
And the most important things:
I've learned to say no to anyone trying to unload their unwanted stuff on me. People were constantly giving me things crap they didn't want anymore and I would feel bad about refusing them so just took everything off them. Now it's a no to everything and after a while people stop offering things like that. It was all stuff I didn't really want or need anyway and more importantly, stuff they didn't want any more which probably should have been tipped but due to the high cost of tipping stuff here they obviously didn't want to pay to tip
And learning to say no, that doesn't work for me. Also, switching phone off when I need a break from the constant requests. During the last lockdown (in November) not one single person phoned me just for a chat. Every call was someone wanting me to do something for them - and I know they won't repay the favour.
So, people can fuck off. The phone is going off when I don't want to be disturbed and I won't be doing stuff for piles of randoms any more.
Plus I am going to audit my leisure time activities in the coming weeks and dump anything that is not bringing me joy. I belong to a couple of amateur music groups which fit into that category and I'm torn as there isn't really an alternative to one of them so if I leave I wouldn't have another one to go to. However, I think I shouldn't be wasting an evening a week on something that doesn't make me happy.
If it doesn't bring joy (whether an item or an activity) it goes in the bin.