As this is posted on the MAJOR board I don't know if you're just looking for responses from guys at the majors, but I'll put in my 2 cents (3 cents Canadian) as a regional FO.
For me, the best inspiration to keep going was how much I disliked the "real" jobs I took to pay for my flight training (from furniture mover to corp. desk job). However you make your money, I would suggest getting something that keeps you around airplanes & aviation--even if it's washing airplanes part-time for some local airline or airport. Just something to keep you involved in aviation until you get your first CFI or 135 gig. After that, it gets easier to keep focus on flying as a goal. It doesn't necessarily make it easier to pay the bills or eat at the best restaurants, but that's a trade off you can make a call on when you get there.
I heard a saying once about getting married: "You should only do it if you can't imagine yourself NOT doing it." It seems to work in marraige, and from my limited experience the same is true with an aviation career.
I hope this helps and good luck with your flying career.