introduces us to a retiree on a budget who says that she's living the good life. >> reporter: marilyn lasseter takes great pride in her work at this philadelphia library. >> they did -- did my book come in yet, dear? >> reporter: at 70 years old she swears she's living the good life. >> it is amazing. the freedom of not having to be someplace at a certain time. >> reporter: marilyn retired back in 2007, right before the economy soured and millions found themselves out of work. despite living on a fixed income, she was able to buy a new house and she travels extensively. >> i live on $3,500 a month. >> reporter: and is it tight? is money tight or no problem covering your bills? >> no problem. no problem. i don't spend. at a certain time in your life, there's nothing that you should need. >> reporter: did you pass down your theory on the importance of saving to your kids? >> yes, i did.