The proven solution that has been tested is when you hold your coin. Provided you are holding quality coin..Let say you incur your loss with bitcoin, bitcoin have proving to return dollar value of your investment in long term if you hold!
Of course, this is not a diversification of risks. This is an investment in the future, but whether it will come, it is a very big secret, which today is beginning to show great opportunities in the market, but they will be really felt only when the market really starts to grow.