One of my favourite stats is the cost of a daily take out Starbucks - over 40 years, that's around one year's salary.
So which would you rather do - go to Starbuck's once a day for your coffee for 40 years or buy a thermal mug and brew your own at home before heading out and retire a year early.
Once you add in compound interest it's more like 18 months earlier.
I refuse to pay for coffee outside unless its to also meet up with a friend and thus use the cafe for its hospitalization rather than its overpriced product.
That said, I don't want to know the math for the alternative cost of my purchase of an overly expensive coffee machine (~$1250). 🤣 Makes great coffee though!
But on a serious note, most people have 5-10 Starbucks-equivalent spending habits that in aggregated set them back a full decade.. Again: it is the small things that tend to become the big things.