Price action has nothing to do with candlestick patterns or even chart patterns. Essentially PA takes into account market structure. As price moves it leaves behind clues as to where it will go next and how far it will travel. Price, in its movements, follows certain rules. The better you get at reading the naked chart the easier your trading will get.
See my posts in the thread linked below for more info and an example trade based on PA. Notice also that the identification of a trend change, in the linked post, relies on market structure.