It's doable, but don't expect to have lots of "expendable" income. Eat cheap, have cheap rent, cheap car, etc...if you have a spouse who has a decent job it'll make things easier also. As a regional FO, i was living with my parents, and spending part of my time with my fiance, helping her slightly with her rent (she was a new teacher). I had a "new to me" year old car, which was costing me 350 bucks a month for payments, and something more for insurance, and i was spending equal to what i had coming in...This was without a mortgage or actual rent. On Captain salary (and remember, half of those RJ drivers aren't deprived FO's) I was living much better, saving a thousand dollars out of every check, still helping the fiance, still living at home, eventually bought a house, got married, and got downgraded....Was back to living the poor road again, but we made it work...left the industry 6 months ago for a better opportunity.