looking at your usage data of stuff and evaluating different companies for contract can save you a lot of money
I am now only paying 4€/mo instead of 9€/mo for my phone contract because I never used more than 400 MB of data quota and also won't really notice any change in speed.
I also changed car insurance now (where it's important to check their contracts and what and how much each insurance offers while also checking ratings) and when switching from my old insurance, which I feel like I was paying way too much for, I'm now saving around 650€/year there too. (it's really expensive for drivers <25)
I wonder how much more I can optimize but I do like not paying that much extra money for stuff I don't use or could have a better deal for.
I am always categorizing all my bank payments using GnuCash (FOSS specialized excel table basically) and quickly saw that my car is one of the most expensive things so I tried to cut down on costs here as much as possible. My phone contract isn't that much but after looking at the invoices it was clearly obvious that I wasn't using all the data in my contract at all.
now I should also really cut down on the fast food...
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