If you lost 20% percentage of your budget maybe because of your strategy which is not successful. Well, its been always part of this kind of investment, downs and ups is always in our side but you should learn your mistake in order to overcome does unsuccessful techniques. Anyways, since the value of bitcoin grows rapidly we can't blame that some of altcoins will go down. But, I believed that there will some altcoins will be increased and your 20% lost will rare to happend again, as long as you've learned your mistakes.