People tend to think that it’s difficult to start with nothing and end up a millionaire, but in actuality it’s not that difficult if you take advantage of the magic of compound interest. Business Insider recreated a chart from a David Bach book to illustrate this point. My only issues are that it assumes a 12% return every year which is a little optimistic and that it focuses on age 65 when the full retirement age for social security has now been raised to 67 to people born after 1960.
A 10% return is more probable and an 8% return is a bit conservative. I prefer to be conservative.
If you start when you’re younger is takes less money, over more time, to become a millionaire. Regardless of when you start, it’s important that you start. Having something is always better than having nothing.
Bigger Than Your Block 
Problem is with the value of the dollar it will take about three times that amount to be considered millionaire. A million is not really a milion.