Times of major headline risk, such as geopolitical flare-ups, pending economic or corporate news or any other news-heavy times are best to sit out in terms of trading. I continually see traders of all skill levels blowing up their accounts because they force-trade during these news-heavy times. Either dramatically cut back on trading or better yet, stay out entirely during such times and your profitability over time will increase dramatically.
Serge Berger
http://thesteadytrader.com