I like to suggest to invest on steem, where you can make an extraordinary profit about 100X. But the conditions are: you have to be awake and it'll take 5 to 10 years according to my calculations. At the same time cryptocurrency is a matter of high risk, you can loose your investment too. So the honest suggestion is, invest a portion of your net worth that you afford to loose and let them grow for 10 years or more in Cryptocurrency. But if you are a high risk taker & wanna gambling then invest as much as you can.
You might be thinking why steem ? Well steem is the currency of Steemit, which growing up and getting more & more popular exponentially day by day, so the chances to grow the Steem price is multiple times more than other virtual currencies, also the current steem price is only about $1 , which is affordable & quite easy to become $100 in years, rather than to become $70,000 for bitcoin which current price is about $7,000.