First of all, congratulations that you are able to max out your 401k. Whether it’s $18,000 if you are under 50 years old or $24,000 if you’re over 50, that is a lot of money to sock away on an annual basis.
Now that we have established you're contributing the max, the next question I ask is do you receive matching contributions from your employer? If the answer is yes, another congratulations are in order because not all employers provide a company match.