I'm entering 1L as a 39 yr old this fall. Law was always a passion of mine and I always said "one day I'll go back to school and become a lawyer". But as time went on it became harder and harder. By mid 30s I thought it was too late, I was too old. Then I had someone tell me, you're going to be 40 no matter what, might as well be 40 and a lawyer.
I still needed to do an undergrad first so I applied to a few universities for the following year, got accepted, liquidated everything I owned and set fourth on school. I applied to law school in my third year and got accepted early. I would have loved to finish my undergrad and have a degree but time isn't on my side
Undergrad was fun, but I remember the first week of classes, I was 36, and everyone there looked like babies to me. It was an adjustment. First class in calc1 the prof said we will spend a week to review, perfect I thought, I could use that. I did not remember a thing during review week, all I could think was "fuck, I've made a huge mistake". But it started to come back and I loved going to school.
I had no trouble fitting in, I act on the younger side and look a lot younger than my age. I told people I was a mature student and older and everyone thought i meant 26/27, which was good for my self esteem. When I told my now good friend I was 38 at the time, he said "holy shit, that's almost my mom's age". That was funny and humbling.
All in all, best decision I could have made. It is never too late to go back. I'd be more than happy to answer any specifics if you PM.