I got undergraduate degrees in physics and EE, went on to get my PhD, and now have my dream job (at least for this point in life). I graduated in 2001 when every investment bank in the world was trying to grab up anyone with an understanding of math.
It just took being more interested in satisfaction with my work than in other things. I spent the early part of the last decade making $8-20k per year, eating ramen noodles, and spending all my time on campus in my lab.
I could have spent that time making 50-100k per year (possibly more) at something that was fairly lackluster and then be out of a job now and broke and stuck in a mortgage that I'll never be able to escape. Instead, my company is trying to find more people like me and is actively hiring and I'm at the cutting edge doing amazing work in my field.
http://www.hhmi.org/jobs/main?action=job&job_id=660
My sister opened a computer store in Hawaii. She sells C shells down by the seashore.