7 year itch/Heading over the hill

So I've been having some realizations lately what it really means to be 30 years old. My 20's are gone forever... and they are not coming back. The funny part is, I was excited to celebrate my 30th birthday back in October 2012. It hadn't sunk in just what that really means.
Life is going faster. A year seems like a few months to me now. My daughter is already 4 and we had originally planned to have "our children" be a couple years apart.
I need to get my health in check. With 30's comes health problems and it's harder to lose weight.
And Gus and I have been thinking about how we want to raise our "kids" for the rest of her/their childhood and where we want to settle down for the rest of our lives. Call it the 7 year itch if you want, but we have ideas popping up. We will see what happens out of that.
I've suddenly realized that life is short. Really. It's too short and it's too fast. If there is something you want to do, goals you want to accomplish, do it now. You must take that first step and get started. We don't have forever.