Is this serious?
YES, although it isn't meant for everyone. I know ppl who save over 50% of their income (myself included). Was I always able to-absolutely not, will I be able to do so next year- I have no idea. (Btw, we started out as a typical kollel couple w/o rich parents or in-laws.)
Keep in mind, this isn't an all or nothing game. Start getting into the habit of saving, as much or as little as you can.
*Start Small - put aside pocket change at the end of the day, $10/week...
*Save your windfalls - stimulus $, tax refunds, gifts, rebates...
*Pay Yourself First - Make savings your first expense of the month
*Make savings automatic -Arrange for a portion of your paycheck to go directly to savings so you barely feel the pinch
And most importantly: START NOW. There are always good reasons not to save. Don't let that stop you from putting away at least something.