As a parent, I sometimes give my children instructions with no further explanation. I expect obedience. Out of trust, (and probably a little fear!) they obey. As they've gotten older, they've often thanked me for steering them the right way, because they can look back and see that I was working for good in their lives.
I try to remember this concept when it comes to the things of God. We've heard the saying, "God's ways are not our own." Some Biblical concepts are beyond our comprehension---others just require an understanding of the Bible as a whole---still others are very clear but seem difficult for us to apply to our own lives in a culture that doesn't understand.
For the past couple of years, my struggle has been with the portion of 1 Corinthians 11 that discusses head covering for women. The Scripture is pretty clear that women are to cover, at least for the times that we now call "church services". Beyond that, I think God is putting it on the hearts of many Christian women to cover on a mostly full-time basis.
I've had lots of questions, and my position on the subject has gone back and forth; but the fact is that God is saying something here and I need to do what I can to be obedient.
In each season of our lives, we'll be faced with opportunities to choose to obey God's direction to us. I think true peace comes when we pursue his higher ways and walk in obedience---even when it doesn't make sense.