All price movement in Forex comes from bulls (buyers) and bears (sellers). When a currency pair moves up it is because there are more bulls than bears and vice versa. The Forex Market (and any market for that matter) is in a constant state of struggle between bulls and bears. Price action trading is about analyzing who currently controls price, bulls or bears and if they are likely to stay in control. If your analysis shows that bulls are in control and that they are likely to stay in control, then you can buy.