7 retirement investing mistakes

It's time to pick funds from your 401(k) lineup. All you do is pick the ones that performed the best, right?

Wrong. Before you research the investment, there are a couple of things to think about. First, plan your investment strategy by determining what asset classes work best for you, and then pick the investments that are best in these categories.

Next, make sure you're comparing apples to apples. Some funds don't make as much money as others -- by design. A bond fund cannot compete with a stock fund because of the nature of their respective holdings. However, different types of funds serve different purposes. The bond fund can have a stabilizing effect on one's portfolio.