One of my favorite poems/hymns. It has been a comfort for me during many dark times.
If there is no God there is no reason for your suffering. It is only God that we can have hope that our suffering has a purpose. God even redeems our suffering.
Amen Lord. My trust is in you!
Westchester Men's Ministry 
Multiple additional favorite poems have been shared on Reddit here: http://www.reddit.com/r/Christianity/comments/11tinw/my_favorite_christian_poemhymn_is_this_one_by/
This one was shared by NicodemusAlso:
It’s written by Samuel Longfellow, brother of the more famous poet of the same name, in 1864.
“I look to you in every need, and never look in vain; I feel your strong and tender love, and all is well again; The thought of you mightier far than sin and pain and sorrow are.
Discouraged in the work of life, disheartened by its load, Shamed by its failures or its fears, I sink beside the road; But let me only think of you and all my strength returns anew.
Serene and calm, you circle me, my restlessness to still; Around me flows your quickening life, to never my faltering will; Your presence fills my solitude; your providence turns all to good.
Enfolded deep in your dear love, held in your law, I stand; Your hand in all things I behold, and all things in your hand; You lead me in surprising ways, and turn my mourning into praise.”