Design a countdown-to-retirement plan

— -- Retirement can be some of the most rewarding years of your life.

Yet many people jeopardize the quality and security of their golden years by not planning . They spend their 20s searching for a partner, their 30s climbing the corporate ladder and their 40s juggling work meetings and their children's soccer games. As retirement nears, they fret about how little they've done to prepare for the next few decades of their life.

One of consumers' biggest problems? Not saving enough — or sometimes, at all — for retirement.

A Harris Interactive survey conducted in November 2010 found that more than one in five adults over the age of 65 had not saved for retirement. Among adults of all ages, one in three had not saved for retirement.

Mike Smith, however, began saving in his 20s. Smith, 55, put away 8% of his income and then eventually increased it to 10%. He believes he'll be able to retire in the next few years because of his careful planning.

"The only thing I advise my children is to start saving early," says Smith, of Seattle.

Saving money early, and often, is one step to making your golden years secure. Here are others to consider as you approach retirement.

15 years before retirement

If you don't have a financial plan, now's the time to make one. This will allow you to track your savings and help you figure out how much you need in retirement so you won't run out of money.

"When you're 15 years away from retirement, that's when you have time to plan and make corrections along the way if markets don't perform well," says Wei-Yin Hu, director of financial research at Financial Engines, a provider of financial advice for 401(k) plans.

Your finances can also recover if health emergencies arise.

When Roy Emmett was in his late 40s, his daughter needed a bone marrow transplant. The operation depleted his savings.

"I had my furniture and my two cars when I got through with that," says Emmett, who retired this year at 66.

He rebuilt his nest egg by saving 15% of his income each year. He also cashed out of stocks and put his money into bonds in the fall of 2007 to lock in gains. By doing so, he dodged the market turmoil that followed as the U.S. economy slipped into recession.

To help you get started with retirement planning, websites including analyzenow.com, troweprice.com and vanguard.com provide free tools.

If you need a professional's help, check out the National Association of Personal Financial Advisors (www.napfa.org), an organization of fee-only planners, or the Financial Planning Association (www.fpanet.org), a trade group for planners who charge fees as well as commissions.

10 years before retirement

If you expect to downsize to a smaller house in retirement, consider doing it sooner rather than later.

The savings you get from moving to a smaller, and hopefully less expensive, home will have more time to compound, says Henry "Bud" Hebeler, a former Boeing executive who developed retirement planning website analyzenow.com.

A smaller house could mean lower utility and tax bills. And downsizing can give you a cash buffer as you approach retirement so you don't have to tap into a 401(k) or individual retirement account, which could subject you to a 10% early-withdrawal penalty and ordinary income taxes if you haven't reached 59½.

A decade before retirement is also a good time to think about honing a skill that could generate income for you in retirement.

Another way you could use this skill, whether it's fixing a car or making a cake, is by trading services with other retirees, says Hebeler, the author of Getting Started in a Financially Secure Retirement.

Review your financial plan. Changes in your life — maybe your kids require more financial support or you won the lottery — in the last few years may mean that you have more or less money. That, in turn, could force you to adjust your savings level and your retirement date.

5 years before retirement

Five years before retirement, Norman Boone, president of Mosaic Financial Partners in San Francisco, advises his clients to build a bucket list of 50 things they want to do in their golden years.

"Having a vision of the things you want to do will make it more likely that you'll actually do them," says Boone. "We find that the first 20 to 30 are usually pretty easy, then the really meaningful things start to come out."

This list will also be helpful in thinking about how much you'll spend in retirement. In Boone's experience, clients tend to spend more per year in retirement than when they were working. Retirees may spend more on medical and living costs, as well as on vacations and family visits.

Start thinking about when you want to take Social Security benefits. The longer you postpone Social Security payments — until age 70 — the bigger your monthly check. But delay these payouts only if you expect to live for many years in retirement.

Other smart moves: Pay off your mortgage before retirement. And, try living for one year on your retirement budget.

"That's the acid test," Hebeler says. "If you can't do it for a year, how do you think you'll do it for 30 years?"