It is always advisable to invest what will not make one lose sleep. Those who follow that principle will not be perturbed by the current market condition because Bitcoin will always come out stronger and better. Instead of panicking, the best is to buy more at any opportunity provided you are in a good financial standing and that you don't need the money urgently.

I have experienced this trading the currency market. The market do not really care about your feelings, your needs and whatever.... it has to do what it wants to do. Ours is to do what we think is the best reaction to the market, manage our risk properly and allow it play out.