Social Security is the foundation stone of that kind of retirement security. It not only needs to be strengthened in order to make sure it's there for younger baby boomers and Generations X and Y, but it probably needs to be strengthened and expanded because the retirement benefits now being offered by most employers are not sufficient to support middle-income Americans in their long years of retirement.

It's probably also smart to keep some money in cash to invest it. But I would resist at all costs taking a lump-sum distribution because the tendency is to spend out too fast in the early years of your retirement. The advice of professionals is to take out no more than 5% per year and that will give you 20 years of distributions, and at your age, 55, you probably have more than 20 years life expectancy.

The main problems are insufficient diversification and the failure to pick age-appropriate strategies - that is, more aggressive when you're younger, and more conservative when you approach retirement. But even then you have to invest for growth.

If the experts are right in their calculations, then we face the prospect of millions of people retiring into poverty from the American middle class in the years ahead. That has all kinds of social and economic consequences. We need to anticipate those and start tackling the problem in a constructive way.

The most common mistakes were investing in money market funds by people who were so scared at the prospect of managing their own funds that they picked the most conservative option, and their investments did not keep up with inflation. The second major mistake was being too heavily invested in their own company's stock, and buying when it was high and there was a lot of optimism about the company, and then having to sell it low when the company got in trouble.

The retirement financial crisis will affect far more people than baby boomers, and certainly it will affect their children. Most of the retirees and near-retirees with whom we talked, said that they were extremely reluctant to have to depend on their children financially, or to think of moving in with their children. But the mere fact that they were discussing those issues indicates that some of them have already figured out that that is what lies ahead for them.

It really depends upon how much money you have in your account. Having a monthly paycheck come in for the rest of your life is extremely important. So it would probably be smart to put some of your money into an annuity, which is a way of buying a monthly pension check.