That being said, life in your 20s and 30s is not without its challenges; you might have student debt, a tenuous career, and dozens of unknowns that keep you from doing everything you'd like to build your wealth faster. There's no straightforward way to guarantee yourself a rich future, but these seven strategies can help you do it while you're still young.
I’d say an interesting thought to add would be an idea suggested by Mark Cuban a while back on his blog. It was basically the idea that you’re not necessarily saving money so that you can invest slowly and retire comfortably, but that you were saving every possible penny, at every moment, so that when an actual fantastic opportunity came around you’d have money to invest.
Don't put all your trust in Social Security. While it's a good bet that Social Security will continue to work for the next 20 or so years, some data suggest that if Congress doesn't radically alter the system — either by raising taxes or reducing benefits — Social Security won't be available in its current form. It is probable, however, that Congress will act to "fix" Social Security. In any event, Social Security was never designed to be the only resource for retirees in their later years. That makes it all the more important that you save and invest for the future. 
Real estate is sometimes a good investment, but it is expensive. Investing in the stock market does not have to be expensive, but it can be risky and unstable. A 401K is a wise investment that you should invest in, but it can depend on how well the business you work for is doing. There are plenty of factors to consider when investing, so make sure you think about it rationally. Talk to experts or friends who are experienced in investing before making a decision.
Change jobs and employer. Once you've gotten some experience under your belt, consider finding a new job. By changing your environment, you can increase your pay and experience different corporate cultures. Don't be afraid to do this several times. If you're a valued employee, it's also likely your current company may offer you a raise or other benefits if they know you're looking at leaving.
You're young. You have a lot of years ahead of you. Now is the time to take risks. Invest in higher-risk, higher-payoff stock opportunities. Consider quitting your job to start your own business. Jump on new ventures and new opportunities. If things go south, you'll have plenty of time to make up for it. Most wealthy individuals will tell you one of their greatest keys to success has been taking calculated risks. The majority of the population sticks with the safe route, so if you want to break away from the pack, you have to try something new, possibly something uncomfortable.
I advocate for the Tim Ferris, multiple income stream strategy. It’s important to have a diversified portfolio and automatic income streams that supplement your basic income earned through work. Selecting the best investment and income streams requires a person do the research, but very basic strategies can be employed that grow the money nest. I think the article is right to say it’s better to earn rather than save more than you spend, because saving money can depend on very specific contexts, while earning money tends to be more predictive. Good article.