I returned to school last fall at the age of 39. Most of my classmates are between 20 - 25, so I feel out of place. There are a few older classmates which has helped me feel a bit more comfortable. Usually I just keep to myself, attend classes and leave. It isn't a big issue, since I have friends outside of class.
Sometimes it is very hard to stay motivated. I have a lot against me, especially since I am the only female in the program. A few times I have wanted to quit, but I seem to always tough it out. My talent in the trade keeps me going.
My post secondary record is terrible as well. I'm embarrassed about my transcript and the three programs I have attempted about a decade ago. I ended up leaving all of them, because they were a very poor fit. Actually I've never had any success in anything except for the obscure trade I was working in.