The most important thing to do in these crazy markets is to stay calm, don’t take impulsive positions, and keep risk at a very manageable level. I have seen USD/JPY fall by 14 big figures in a session so don’t presume that this panic is over and done with just yet. Rallies back towards 79.00/50 will meet with very grateful sellers and that should be toppy now; I’d expect any dips towards 75.00 to be seen as good-value levels.