Every time my friend Elizabeth gets some extra cash—a bonus, tax refund, birthday money, whatever—I invariably ask, “Straight into savings, right?” She hesitates, looks everywhere but at me, and says “Well…” She needs some new work clothes. And she’s had her eye on this great lamp. And she really wants to fill up her iPod. And her nail polish collection is critically dwindling. And, and, and, spend, spend, spend. I love this girl, but when it’s time to retire and she has to live off of outdated lamps and half-empty bottles of nail polish, I’m not going to feel bad for her one bit.

There is a serious lack of cash management in today’s Gen X and Y population, even among the smartest, savviest, most motivated gals out there. It’s so easy to spend though, isn’t it? A few bucks here, a swipe of the credit card there. You get a bonus check and wheee! Free money! But before you go skipping to the nearest arcade to spend your windfall on skeeball and candy, consider your future. You know, that way-off, intangible place where you’re either lounging by your marble swimming pool or eating cat food straight from the can. You’ve heard millions of times that you need to save and manage your money; now it’s time to do something about it. Here are five easy, real-life, do-able ways to keep your cash without feeling deprived.

1. I shouldn’t even have to say this, but if you don’t have the money for something in your checking account, you can’t afford it. I’m sorry. I know it sucks. But living beyond your means is a slippery slope that can start with $30 for groceries and wind up at $15,000 in credit card debt. If you’re already in a high debt situation, make sure you’re getting the lowest rate possible, and don’t ever pay a firm upfront to “advise” you on consolidating your debt. Go to a non-profit organization, or simply set up a plan for yourself to pay down your loans. Tell the credit card company what you can pay, and see if they’ll settle for less than you actually owe. Sometimes they’re just glad to get something, rather than wait for you to pay it off $15 at a time.

2. Use your interest. If your money is in a regular old bank account, chances are it’s not doing anything for you that keeping it under your mattress couldn’t do. Research higher-interest savings accounts with reputable banks (I use ING, which is at 4.25% right now), or consider switching to a credit union, which usually has great rates and fewer fees. If you have some money you can sock away for a while, try a CD. If you’re uncomfortable with your money being inaccessible in a long-term CD, try something shorter like 6 months, just to get the hang of it.

3. Let your boss pad the stash. If your company offers a 401k, participate. You decide how much money you want taken out of your paycheck pre-tax (if you’re just starting out, you can try 1% or 2% until you get a handle on how much that amounts to each month). Picking your funds is easy, because “diversification is key.” So pick a fund from each category they offer (they’ll give you a run-down of how each one has performed in the past) and you’re all set! You’ll probably never feel the deducted cash from your paycheck, and the best part is that many employers will kick in each year. Some will add 50 cents for every dollar you put in, others have a flat figure or another contribution formula. Either way, it’s free money. By the way, if your company offers direct deposit, have them take money straight out of your check and put into your savings account. That way it’s automatic, and you’ll never miss it.

4. Quit putting your money where your mouth is. It’s tempting to go out for lunch every day, especially when making a lunch at home takes up precious sleeping time. Besides, what’s $8 on lunch in the big scheme of things? A lot, actually. If you work for 40 years and pocket that $8 on lunch just twice a week, you’ve saved yourself over $33,000. Aside from conserving your cash, you’ll make a positive impact on another “bottom” line—bringing your lunch can help you stay healthier and maintain that girlish figure. Kinda makes brown-bagging it more appealing, huh? P.S. next time you go out for drinks, remember how quickly those mojitos can add up. Shoot for happy hour, and give yourself a dollar limit.

5. Buy it if you love it. But don’t buy something that might be sorta cute with the right shoes if you ever had to go to a boating gala on the Cote de Azure in mid-May. And who couldn’t use the $50 you spent on yet another pair of torturous black shoes you could never bring yourself to wear again? If you must have it (whatever “it” is), a good sale is a great thing. Ask the salespeople when they expect your item to be marked down. Look for sample sales (where big name designers sell off their prototypes or clothes that went through the machine with the wrong color thread), check out the random little shops that sell quirky stuff at fantastic prices, or sift through the bargain and knock-off stores. If you do buy something, work it into your budget. Spent $35 on a summer skirt? Bring your lunch a few days to even things out.

Here’s the thing you need to keep in mind every time you reach for your wallet: what you buy today diminishes your future nest egg. It takes discipline (which isn’t fun) but think about what else you could do with the money you’re spending. The cash for that gotta-have-it item could be useful down the road. If you feel your hand drifting toward your purse and you just can’t control it, get a savings buddy. You know how a gym buddy can motivate you and help you feel more accountable for keeping up with your routine? Well a savings buddy can help you keep your cash. Set weekly or monthly budgets for yourselves, and compare your results. You can afford to save. You don’t have to put away $700 a month to be a saver. Start small, and before you know it, you’ll see big results.