JV, you sound like you are a reactive investor; in other words, you're a trader. Price movement influences your decisions moreso than anything else. Good traders have strategies for these situations.
The good news for you, in my opinion, is that this is just the start of what could be one almighty bear market. Why is it good news? Well you could sell next week in good faith that things will most likely be far lower in a few months time. That bear flag break on pretty much every major equity market tonight looks very ominous. I personally didn't expect it to fall right through it like it has tonight.
Sounds dramatic, but what is fundamentally unfolding right now is unprecedented in the modern era. We have a handful of debt ridden poorly managed European countries on the brink of economic collapse, as opposed to single banks during 2007-2009.
The only position I have in the stock market at the moment is a small dabble in MZI and that will be strongly reconsidered before open on Monday.