trend are flexible
there are smaller trend, and bigger trend
try to read different trend in past charts, and see how smaller trend creating bigger one
so in order to follow a bigger trend, try to follow the smaller one first, you will see there will be several retracements that trying to counter the trend, if the retracements are strong enough it will become reversal, if not, it may becoming sideways or following the previous trend
sound easy, but it's really hard to trade and gain profits based on this theory, traders gonna need a good anaysis to gain here