I was 30 when this photo was taken by Fel. That's kind of what your 30s feel like!
I can't speak for all humankind, but from my experience and from what I've seen and heard, women generally shed the insecurity that plagues them in their teens and 20s. (That's one of the best things I'm getting out of this decade.) You realize that yesterday's problems are something you can kind of laugh about. You have a better sense of who you are. You don't change--you just become more of the person you're supposed to be.
I often bitch about being slower than I used to be, being less toned than I used to be, feeling the after-effects of eating anything deep-fried, getting freckles more quickly when I'm exposed to the sun. But I'm secretly happy that I can do things I couldn't do when I was young and lazy and utterly dependent on others. I could run a half-marathon, and I'd like to think it's because my mind is strong enough to handle it now. I can run a household. I can run a magazine. I can take care of my husband. I can take care of myself. But whether that comes from being in my 30s or being married, we'll never know!
When I turned 30, it was such a huge relief. But I guess it's not the same for everyone. You can choose to stress over the state of your skin, and how it's so much harder to keep the pounds off, and your ever-growing list of responsibilities. Or you can choose to make it your best decade yet!