Only five years off? You're ahead of the game!
I'm in my thirties, but usually I feel and act as immaturely as my son, who is five. It's been hard for me to be convincing at job interviews, because I look like a teenager and act very awkward. For eight years, I had a job as a sales associate in an art supply store, where I earned the nickname "paint geek" because I knew all the different pigments and how they interact chemically with one another--but even though the other associates always called me on my cell phone when a customer had a technical question, other people were always the ones to get the real responsibilities and promotions. My current job is a "grown-up" job--adjunct prof at a local college--but I got it only because my supervisor was a professor of mine and knows me well and that I am capable. Most everyone on campus assumes I am another student.
Typically, when I sense conflict with someone, I either smile nervously or cry, which adds to the impression of immaturity because I can't seem to control my emotions. The other day I was playing soccer with my son and husband and some other family members, and my husband kicked the ball into my face. I was thrown off by that and it hurt but what really annoyed me was that everyone rushed over to see what was the matter, and I wanted to be alone. So when my husband reached out to me, I hit him and ran away. I felt badly about it, but I didn't know how to act as an adult would. I often feel as if I'm a terrible mom, because I can't teach my son the proper emotional responses, or how to manage his emotions, because very often his behavior is more appropriate than mine.