Here's my advice, invest into low-cost (low expense ratio) index funds. It's the fees that end up killing you. DON'T try to play the market. 90% of ivy-league educated portfolio managers that spend every waking minute devoted to it can't beat the Dow when fees are counted, why would you be able to? Now watch this video before reading on,
https://www.youtube.com/watch?v=SwkjqGd8NC4. No seriously, watch it. You will finally understand what you need to do next.
How you invest toward retirement is one of the most important decisions you will ever make. Do it right. Invest all the way up to what your company is willing to match in your 401k. Any additional money should go toward a Roth IRA. Again, invest in low-cost index funds. If you happen to be able to max your IRA ($5500 for 2016) then lucky you and you're well on your way. Put the rest of the money you devote to retirement into the unmatched portion of your 401k. If you are fortunate enough to be able to max your 401k then my suggestion would be to open a HSA account if your company offers it. You can invest up to $3350 this year. Basically, any of the money you use from the HSA account can be used for healthcare in a high-deductible plan, tax-free. But here's the awesome part; you get to invest it and when you turn 65, you can use the money for non-medical reasons. Basically, it's another IRA. I recommend using a laxy portfolio strategy as described by bogleheads:
https://www.bogleheads.org/wiki/Lazy_portfolios
Finally, tax-efficient fund placement is really important and everybody overlooks it. People lose on average ~2% annually by simply putting their funds in the wrong spots. You should always put your international index funds (because you are smart and you index) in your taxable brokerage account. At the end of the year, you will get a foreign tax credit. Similarly, always put your bonds in your 401k. Domestic stocks can typically go anywhere but I keep them in my 401k. Now take some time and read this because this is one of the most important things you will ever do for yourself and your family:
https://www.bogleheads.org/wiki/Principles_of_tax-efficient_fund_placement
Finally, live within your means. Retiring comfortably is well within your grasp if you can put away 15-20% of your money annually. Read some Mr. Money Mustache
https://www.mrmoneymustache.com/ dude will get you MOTIVATED! Also, don't hire someone to manage your investments. They typically charge around 1% of your total investments annually. Not 1% on your gains, 1% on your whole damn account! That's whether it goes up or down, he gets it. And if you do the math, you're likely to withdraw 4% of your savings annually in retirement. That means, your financial advisor just quietly took 1/4th of your retirement income. Not cool. This investment stuff is easy, just read up on it and you'll be better than fine if you follow through. Hit me up if you have any questions!