It's the most dumbest move I have ever seen by any crypto enthusiast. 20% interest!! Are you serious?? Have you ever think of the implications it can bring in your financials if you don't repay the loan. The harassment of collection agencies are one thing, but your credit rating will be doomed and you won't be getting loan for any future purpose. I believe that crypto investment can fetch you much higher return, but crypto market is a very liquid market and anything can happen at any time. You may make profit of well above 50% and you may loose all at the blink of an eye.
If you have already taken out the loan, then invest heavily in bitcoin, like around 50% of the total amount. Then diversify between Ripple, ETH, Zcash and Monero. These altcoin prices are down since last few days so it can be proved as a good investment for future. But if you haven't already taken the loan, please cancel the application.