To worry is not the best response to do but to find good coin like eth, prl, ripple and others with a promising potential. Sometimes to take the crisis in the market as a good chance to make profit is the only the best.
Well we can find alternative to invest while bitcoin price turns red. We have other coins good to invest that really can have profit just choose the best. It was like this price turns red and green just have a little patient anyway price will turns green.