Ways to tell you are, in fact, growing up rather than just getting a bit older:
1) Your lunchtime break from a girly shopping spree no longer involves sweets or fast food (teens) or even Pret sandwiches (20s), but a picnic of chilli prawns, salmon, parma ham, and 3 forms of berries.
2) Having had a glass of wine, you read something that makes you see red and then choose not to respond. The flush of pride that you have avoided going to bed far too late for all the wrong reasons in no way takes away from the fact that you didn’t start a flamewar.
Although let’s be honest – having just 2 examples suggests I’ve still got a lot of growing up to do 🙂