I started and dropped out to join the army. Didn't start again til I was 26. I got my Bachelor's at 31 after a couple false starts, masters at 33. I'm 35 now and jumping back in to get my doctorate. The key to success is finding both motivation and discipline. My first time, I was motivated to go, but I also wanted the social experience and couldn't find a balance. After I finished the army, I had plenty of discipline but had to learn to be motivated because I was much older than my classmates and didn't have a real social connection. Then I got to grad school and was a lot closer to average age.

At the end of the day, though, nobody needs that stuff unless you are a nerd like me. Just figure out how you want to live your life and make that happen.