As much as God speaks to us in the 'Rainbow' days of our lives, so God also seems very silent during other time periods. These days are referred to as 'Ordinary days.' Perhaps this is what happened in the days of Samuel:
“In those days the word of the Lord was rare.” – 1 Samuel 3:1
So the big question is: "Is it my fault or God's?" or "What is God up to?" or "What am I supposed to be doing during these times of silence?"
John Ortberg says this - “Maybe the reason God lowers his voice is so we will learn to pay attention.”