One of the things my mom says periodically is that money-saving starts by cutting out daily cafe-bought coffee.
I used to be awesome with this, but ever since law school started, I've been purchasing coffee everyday at the school cafeteria. I already carry enough shit around, and don't think far enough to shove my tumbler into my book bag. The other thing about buying coffee is that I get to enjoy a fresh cup of coffee more often, which is key. Especially for a black coffee drinker. (Milk kills the acidic taste that old coffee has.) I don't care about my coffee being fancy and expensive, but I do care that it's fresh.
Anyhoo, I'm trying to be better. I bought my tumbler that I bought in Japan today, and enjoyed my free cup of coffee from home. Imma try to keep that up, but no promises.