Joshua 1:8

Do not let this Book of the Law depart from your mouth; meditate on it day and night, so that you may be careful to do everything written in it. Then you will be prosperous and successful.

Hmmm. Perhaps I should read my bible a bit more often...

James 5:16

Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous man is powerful and effective.

We should pray for each other so that we might be healed. We should pray for lots of things. Something a friend said the other day about bad things happening by association with spiritual struggles reminded me of something Joyce Meyer said - that if a situation gets worse after you have started praying for it then that is an indication that the prayer is working.