Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous person is powerful and effective.
(James 5:16)

It's very comforting to have friends that you can turn to in times of need and know that not only will they not pass judgment on you, they will offer prayer to help strengthen you.  You immediately feel their support and it gives you a second wind to attack the problem.  Prayer is indeed powerful!