I'm going to be 30 in a little under a month, and things are looking up.
I would not want to be 14-22 again! Parents' rules, terrible body image, not taken seriously by others etc. I'd just as soon forget much of that time in my life. From 23 until now, things have been pretty stable... but the bad aftertaste of those earlier years lingered. Things aren't so bad these days. I can do everything I could do 10 years ago (and more!), plus I don't have to deal with the insanity that is the late-teens through early-20s. I believe I've matured in how I handle adversity, and that I may just be entering the prime of my life. It's also the first time I've ever felt truly comfortable with the idea of dating someone in her 30s (mrrreow!), and girls in their 20s actually give me the time of day. Why would I ever want to go back?
Some say I look about 23, but I'm checking 30-32 because that's how I feel, and it feels pretty darn good.
Sorry if this seems overly smug and cheerful. If you'd prefer, I could dwell on the fact that some might now call me middle aged.