I went on holiday alone this summer. I'm 18 and it's the best thing I have even done. I took a crusie around the Med. I had a job since I was 16 and had been saving up so decided to blow all on one nice holiday. I made friends with other passengers on the ship. It was lonely at times as they were with families so I ate alone a few times in my cabin and walking around ports alone can be daunting but you find yourself maturning almost overnight.
At home I was a bit shy and scared to do things but on holiday there I was thousands of miles away from home, in a new city, not understanding the language, visiting local places. I learnt so much about cultures, how to be uber-steetwise and what it's like fending for yourself. People say university teaches life lessons of how to fend for yourself but holidaying alone was a crash course on survival. It was great.