I mostly trade forex, long-term and take a top-down view of currency strengths so I know I will be getting into the strongest trends with the strongest currency match-ups.
I quickly view the 28 leading pair charts to see which are in strong up or down trends. This also allows a simple tally of which currencies are strong or weak. Right now, I have AUD, NZD as strongest (though you can most times regard these as just one currency), with GBP next. The weakest I see as USD, then JPY, then CHF. I also look at the recent completed weekly bars to notice recent strong price action.
Having identified my favorite targets I will look for a way to get into the strongest trends using whatever price action or candlestick pattern appears EOD.