When I was 38 I began a degree in Nursing and after two years injured my back and came down with Lupus. I had to take three years off before I was diagnosed correctly but I was still unable to return to Nursing due to chronic back problems and fatigue from Lupus.
In 2007 I returned to try and finish my degree in business. I was able to use all my academic nursing credits as electives which lightened my course load each semester by one class. I'm in my 3rd year of business right now, majoring in accounting. I'm not sure if my health will hold out and I'll be able to compete for a two year required position with an accountant before I can pass the licensing exams.
It doesn't matter though. I don't regret one course I've taken in nursing or in business. Each one I came out wiser and more informed about the world and how it works. I wouldn't trade my education for anything. Smartest thing I ever did with my life, regardless of how much it pays off financially in the end. Whether I become certified or not, I will still have a better job with my degree than I would get without it.
I will probably be 48 when I graduate, if all goes well. I am also not the oldest person there. Never to late to learn something new in life.