Yes, it's a metaphor. I always think of this saying when I need to do something that is seemingly impossible. You just take one bite at a time. You just take the next step towards your goal. $5 extra towards one bill is $5 sooner to have it paid off. It may make it that instead of 20 years to pay off a student loan, it will be paid off in 15 years because you've paid $5 a month on it over the minimum amount and then you slowly made that $5 into $10 because you had some extra money and so forth. Debt isn't paid off in a day but it NEEDS to be paid off because it is a promise we made when we took the loan or charged the item on the credit card. Do you know that charging something on a credit card that already has a balance and you are paying interest on it suddenly increases the amount that you have to pay for it? So that great buy at $80 may end up being $150 by the time you pay down that debt.
My daughter is not financially a good manager but now that she's out of the house on her own, paying rent and managing her own bills, I'm trying to help her think things through. I've shown her through her budget of her fixed expenses that she has VERY little extra at the end of the month and that she needs to earn extra money. Basically her paycheck will pay her fixed expenses with a small amount left that she will use for savings (her first savings goal is to get one month's rent money in a Capital One 360 account for an emergency and then after that, $1000 in another CO360 account as her emergency fund, plus she is to put away $5 a week in singles or 5s into an envelope until she has $200 in emergency cash in her apartment in a few hidden locations). She also has $800 in credit card debt that she NEEDS to pay off and my plan is for her to have that paid off by the end of the year, with that amount being accounted for in her budget because to me, that needs to be a fixed expense rather than an extra. So instead of having $200 towards extra food, clothing and fun, she's tightening her belt, eating cheaply, not buying clothing and only doing the free things that are around Washington DC and paying off that debt that she incurred. Once that is paid off, she will have a little more breathing room. These are things that adults do. Be responsible, fulfill your promises and deny yourself some pleasure in order to be financially sound.