divergence on m15 is good for 50-100 pips profit depends on pair but still ONE divergence on m15 WILL NOT change daily trend.
So if u see that daily is about to leave bull/bear zone h4 MUST support this view then h1 then m30 or m15.
Simple clockwork or step by step base on S/R
This system only can show u what position is against major trend and when trend is about to end which doesn not mean the price may not run another a few hundreds pips before divergence will play out.