Mambwe, Zambia
In your 20s....
Your backpack consists of mostly bikinis, sarongs, and sundresses, having forgotten that you might be at altitude at times and then have to panic-buy warmer clothes in Peru for the Inca Trail.
Your backpack is so heavy (also full of guide books, as this is the pre-Kindle era) that you can barely put it on yourself.
Having lived for almost a whole quarter-century you feel worldly and mature, yet still look at people travelling in their 30s an...