Just when all seems to be going right, challenges often come in multiple doses applied simultaneously. When those trials are not consequences of your disobedience, they are evidence that the Lord feels you are prepared to grow more. He therefore gives you experiences that stimulate growth, understanding, and compassion which polish you for your everlasting benefit. To get you from where you are to where He wants you to be requires a lot of stretching, and that generally entails discomfort and pain.
-Richard G. Scott
I think that not only will God strengthen a person in their trials, but He will also allow experience to occur that strengthen His people. Unfortunately, some give in to addiction and flounder - while those that wade through and on become stronger and can confront the next turbulence with confidence gained from a successful completion of past hills. I don't think I've seen a person who has lost all of their hope or faith, have you?