Well, I can tell you that, while my income is pretty good now, for most of my 20s, it was around what you're making, or less. My BA being in English, I didn't have a lot of high paying options. I decided to apply for grad school at age 24, started at age 25, and worked part-time while getting my degree. My income basically doubled after I graduated in 2009 and got a big promotion the same year. When my income increased, my lifestyle did not, so was able to pay off my student loans in pretty short order. I also got married in that time period, and my husband's income was also low, but now he's in grad school, as well, and with his degree, will have the potential to out-earn me.
I think the key for you will be figuring out a job or series of jobs that will make you a higher income, and just continue to live frugally, which you have a lot of experience with right now, and save all that money you don't need to live a happy life. :)