happy birthday! the once thing you should expect upon turning 22 is that you'll be less conscious of age. once you're past 21 it doesn't matter if someone's 19 or 30, you just start to see everyone in the same way. i cant explain it well enough but it will happen.
I turn 22 at the end of the month and one change I've noticed already is that I'm getting to an age where when I go out to bars and hit on girls, I check for a wedding ring haha. At 18 or 19 those things seem far stretched but now I feel like girls in my "age group" could potentially be engaged or even married.
Happy Birthday! I just turned 23 yesterday. 22 was a fun year but it kinda sucks cause it meant graduating college...friends start getting married, people expect shit from you, you're supposed to have a job, etc...On the upside, if you've already had a job for a while you can finally take some time off and do whatever the hell you want (ski on a Thursday to celebrate your b-day).