Before you start withdrawing money from your retirement accounts, most financial planners suggest setting a target annual withdrawal rate. Make it low enough to avoid depleting these funds too quickly. You can fine tune your withdrawal strategy each year, preferably with the guidance of your financial or tax advisor. For example, if your personal situation changes, you can adjust how much you should withdraw.

Also review your retirement portfolio — your mix among stocks, stock mutual funds, CDs (certificates of deposit), bonds and so on — to be sure it's well-diversified. (For ideas about how to rebalance your portfolio as you age, see Retirement Strategies for All Ages: A "To-Do" List.)