If you really look at this photo, especially the sand, you can see something interesting.
Notice that in the bottom of the picture one is just entering the beach from some steps. The sand is disturbed and that sort is difficult to maintain your balance when walking. Then as one gets closer to the water, the sand becomes hard packed which is much easier to walk on. Next there is really wet sand, and finally the actual water.
Days can be like walking on the beach. During a day we may move from difficult moments to easy moments to moments where waves are crashing over us. But the GOD of ALL COMFORT is always with us.