I totally flubbed college in my late teens, and didn't go back to get my bachelor's until I was 40. I went to Harvard Extension, and it took 7 (seven!) years of 2 classes per semester, late nights, and long weekends to graduate, bachelor with honors, in Computer Science. I gained exposure and appreciation for some other topics along the way, like philosophy, and was surprisingly good at those, too.
In that entire 7 years, I held down a full-time job, raised one kid, birthed another, sold and bought two houses, all the while writing papers, developing projects, taking exams, and the like. I sacrificed some time with family, but definitely TV, movies, sports, and video games (still don't miss those, actually). My family and everyone I worked with, including my managers, were incredibly accommodating with my time, respecting my early mornings and lunch times working on homework, and encouraged me along the way, helping to count down the credit hours. I learned I had a much larger support network and cheerleading squad than I realized.
Did I need to go through all of that? Kind of, but not really. I was gainfully employed, and was killing it at work, but I craved the personal satisfaction of having accomplished this thing. I consider my degree to be my mid-life crisis gift to myself, and I couldn't be happier with it. Way better than a car.
Go back to school. You won't regret it.