Hint: It’s not (all) about latte art. — A basic money management principle: stop spending money on coffees. Yes, on a purely mathematical level, paying 4$ a coffee several times a week is a total waste of money. If you grab a coffee out every day of the work week, that’s 20$ a week (weekends are another story). Per month, 80$ and per year that’s about 1,000$. 1,000$…