If you’re more worried about hanging on to each and every penny than you are about developing yourself, your career and setting up various income streams than you’re like a dead fish in the water.
One of the biggest differences between rich and average people is that rich people know that they can always make more money – while the average seem desperate to hang on to the little they have. Put more energy into maximizing your earning potential and you’ll actually reach the point where you have enough money to put away in a savings account that can earn you some decent interest – otherwise you're just playing with change. Putting all your money into a savings account isn’t ever going to make you rich but investing in your education and using your money to develop additional income streams certainly can.
Coupons and 50% off sales are only for those who have no intention of moving up financially – you're not going to become a millionaire by eating noodles and catching a carpool to work but, if that’s not what you have in mind, putting something away is always better than spending every cent mindlessly.