Labor of Prayer
I am always amazed at people who don't think others are hard, diligent workers, just because they do a different type of work. For the hard working intercessors and ministers of prayer out there: Take Epaphras as your example, he gets two mentions in the living breathing Word of God for his hard work. Paul goes out of his way to "vouch" for his hard work of prayer through which he labored with and for The Saints.
He sees your labor, and even though it is a work that The Modern Church does not recognize as being of much natural value, stay faithful and full of passion, He will reward you in the natural for what you have done in secret.