TailsWhich is pretty much what I and New_Trader have said as well. I've found experience to be the only common denominator.
I mean, look, you can find a gamut of styles that go from the mainstream to the esoteric. I was just having a conversation with a swing trader yesterday, and he said that in his couple months as a prop trader he practiced using only stochastics on his screen and no other visual or number whatsoever. This altered his view of the market such that he wouldn't trade without his proprietary indicators. Turns out his portfolio's up 75% in the last three years.
Personally, I couldn't trade like that. So that my take; experience is the only way to have an idea of where the market's going.
I know you're looking for something more specific, but there isn't. Trading is about context. If you see a strong uptrend, best to go with it. If you see a large player gaming the market, best not to fade him. Stuff like that.