well if you want the easy way. Just hold. You will still make good money.
However if you want to diversify you can keep 10 btc and the remaining 2 BTC which are now almost worth $19K you can invest in cheaper coins like ripple which is currently worth .25 cents.
Believe it can hit $2 dollars by the end of 2018. Still hasn't done its run.
Also you can consider a good ICO.
Bottom line keep at least 10 BTC. Is better than gold