$100 a month for 12 months, $1200.
$1200 x 40 years, $48,000.
It's possible to take $100/month for 40 years and see it turn into $1,000,000?
100 dollars a month won't get you rich. And if you're only saving 100 dollars a month, you shouldn't be rich anyhow, so it all works out.
I have friends that thought my wife and I were nuts for driving crappy cars when we both had good jobs. They thought we were nuts living in a small townhome until just last summer.
We think they're nuts for making the same money we do, and doing it for years, but having nothing to show for it but super expensive vehicles, a big house on a tiny lot where you can touch your neighbors house if you reach out your window, and a bigger mortgage.
You either live below your means and save, at your means and stagnate, or above your means and flounder. No matter how much you make, the three choices are still the same.