The following video is part of our "Ask a Fool" series, in which Motley Fool contributor and financial planner Dan Caplinger answers questions from across the investing universe.

In today's edition, Dan addresses a key question that all investors face: How do you analyze and keep track of your portfolio? With such a wide array of stocks, mutual funds, and other investments, it can be a challenge even to know what you own. Dan recommends using a basic asset allocation approach to determine not just your exposure to stocks, bonds, cash, and other broad investment categories, but also how you have those assets divided within those categories. By doing so, you'll be in a better position to identify the strengths and weaknesses in your portfolio as well as take action to improve it even further.

The right mix of investments is crucial to building long-term wealth and retiring well. In our free report, "3 Stocks That Will Help You Retire Rich," you'll find some stocks that could help you, as well as some winning wealth-building strategies. Click here to keep reading.