11 things to do in your 20s to become a millionaire by 30

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"In a free-market economy, anyone can make as much money as they want," emphasizes self-made millionaire Steve Siebold, who has also studied over 1,200 of the world's wealthiest people.

That applies to 20-somethings.

To help you reach the seven-figure mark by 30, we rounded up 11 pieces of advice from people who became millionaires at a young age and people who have studied hundreds of self-made millionaires. We can't guarantee millionaire status, but doing these things won't hurt your odds: