Faith is facing reality without being discouraged by it.
You can't grow strong without resistance.
When the Bible speaks of God's love for us and the kind of love we are to have for him and for other people, the word is always apage, signifying a commitment to act.
We become whatever we are committed to.
Only in hindsight do we understand how God intended a problem for good.
While it is wise to learn from experience, it is wiser to learn from the experiences of others.