If you do not know how to trade,the best way to increase your capital is to buy cryptocurrency and keep it for several years. If you know how to trade cryptocurrency understand how to do it, you can earn good money much faster than to keep altcoins for an indefinite period.
I think we need to hodl to at least 2020. I suggest diversifying our portfolios now and hold as long as we can, because the market won't change much in 2019.