The feeling of having enough time. Right now, I know that it's pretty O.K. in terms of time but I miss those long periods of time where I could do anything anywhere. Of course at that time I was scared of buses and was learning my times tables.
Just a proper "holiday" time where I don't have to worry about the next day, week, month, year. I know, I know: "You're still in year 11. That's nothing. You got craploads of time and enjoy it while you can."But still. C'mon, who actually thinks that at the time?
Can't wait for the holiday period between the end of high school and the beginning of uni.