Remember trading not always make profit, sometime you'll loss. so be smart trader. No need to get dishearten with trading on loss. Each loss should give the new courage to come back stronger in next trade.
Loss is something common that can be found everywhere. Not only with bitcoin, every commodity or stock gives loss based on our expectations. In my view loss happens when a trader don't sell when the price was good. Another thing is that trying to retain the loss on particular trade in a consecutive single trade. This results in big failure and loss than successful profiting.