An “all or nothing” mentality is one of the chief reasons our prayers stagnate, and why we stop expecting God to answer our prayers. We quickly become despondent and give up on prayer if we don't immediately see a full answer to our prayer. This author teaches us one way to pray with hope.
Jesus instructed His disciples to pray for workers in His kingdom. That instruction is then immediately followed up Him sending out the very ones who were praying (Matthew 9:38). This article discusses the task of praying for missionaries.