Growing up is hard to do never happens.
When you are younger you always think there will be some point in your life where you miraculously will grow up, or become a grown up. Usually this is assumed to be somewhere between 20 and 30. Things don't really happen that way. I'm 23, and I feel like I have grown, but that there is still a lot of growing to do. I think it will always be like this. At 60 I feel like I'll still have more to learn in life. Growing up isn't an achievement, but rather a progression. It starts at birth and continues all the way through death, and from start to finish there are lessons to learn.
Signs that tell me I am growing up:
(may not be applicable to everyone)
I'm getting married
On October 18th 2009 to be specific. Now, marriage in itself doesn't make anyone more "grown" than anyone else, but I believe that the mindset that I've learned and developed that has put me in a place ready to marry, makes me know I have grown as a person. Committing to marriage means that I have acquired skills of commitment, trust, love, and the ability to comfortably feel responsible for and connected to another human being for the rest of my life. Growing up lesson: Its till death do you part, so make sure you are ready for life together.
My garbage stinks
This may come off strange but I think a person who's trash smells is a person who is eating and cooking well. In college living off of ramen and Easy Mac, my garbage didn't smell much. As I have grown in my culinary expertise and the trash is laced with remnants of vegetables and fresh meats rather than McDonalds wrappers, I am learning to provide through food for myself and my future hubby. Growing up lesson: if you can't cook, you can't eat.