Our strength fails, but God never does. We grow weary, but God is never tired. We become discouraged, but God is Sovereign… Not that all things are good or pleasant or easy, but that for those who love God (notice the qualifier) and are called according to his purpose, they will work out for our good, and I dare add, for His glory.
— Jason Franklin, Stepping Forward after Getting Knocked Back… Again, a great devotional that you should read.