since I moved twice last year and had to spend a lot of money on my health - not regretting this, but I had to set my priorities straight. out of need, I had to simplify my life and now that I'm back on top of things, I'd never go back!
after moving into a shared apartment, and then finally into my own small space, my belongings are down to an absolute minimum, what a relief! basically what I did is go through all of my stuff and made three piles: keep, store or give away/trash. if you only have limited or no storing space, put those things away in a box. if you haven't touched that box in a year - in the bin it goes!
same goes for clothes. I used to shop for fun every other month - couldn't afford that anymore. I'm lucky to have a lot of friends with my size, so we end up swapping or sharing clothes. instead of buying, I look up second hand clothes and go for a more timeless, durable style.
bonus tipp: colour-theme. when looking at my wardrobe, I found my clothes are all within the cool colour range - black, white, grey, with bits of blue and green. after realizing that, I found it a lot easier finding new combinations for old bits in my wardrobe.
I started tracking my expenses about six years back, even before I moved out to live on my own. just because I had money left at the end of the month, doesn't mean I can automatically afford an own apartment! I found it always hard to tell where all my cash goes.. bills, larger amounts are obviously all documented on my bank account. I use an app for all my cash expenses now and divide into categories: food, car, apartment, insurance/saving, phone/internet, emergency/exceptions (repair, accidents, etc.), hobbies and, no joke, alcohol.
my number one expense was alcohol and partying. you never realize how much you really spend on different things until you document it. admitting to myself that I spend more cash on booze than food is well, quite shocking. that led me to point #4.
so, you've got your expenses documented, which means now you can evaluate - what's important (next to housing & food, obviously)? where can I save money? and that's where the budget sets in. I tried to do a weekly budget, but ended up being too lazy. nowadays, I try to consciously think everytime I go out: what am I going to spend money on? why? how much? and set myself a limit.
whenever I'm out and about, I estimate the amount of cash I will need, and leave the rest at home. if friends take me on their shopping spree, I leave my wallet in the car. this actually takes some practise, but after a couple of months, I tried to shop for random clothes but simply couldn't. "I don't need this" & "think about the next time you'll move house!" kept creeping up in my mind and I was honestly impressed with myself!