Water Rhythm-strategy in training.

Water has certain qualities, like atmospheric pressure, we spend our lives getting used to movement on land, and evolve around that environment.
Getting used to movement in water is new to us, different set of muscles and intensity required.
Fighting water will get you no where.  Maintain pace by following the natural rhythm, streamline.  Like CEO of successful companies, the best swimmers are the ones who appreciate streamlining in water, embrace water instead of fighting it.  Water is like the market in which CEOs swim in, is it the sea, the river, the lake or the pool?  How to navigate in it?  What is your strength?  What is your resources?  No.
Learn about the water first before you make that strategic decision, learn along the way, and form your strategy.