Investing for you future is the smartest way to retire early. They are tons of way to invest like buying gold coin or gold bullion. Gold investment is what we are trying to do now. We have few gold coins already but we are still planning to buy more as an investment.
So if you have not tried to invest bullion yet, you better try it now. This is a very good way to invest for your future and you might want to visit the entire link above to get more information on how to buy them. They are the leading company who provides what you need.