I have taken much of value away from the articles within, especially a sermon by Charles Spurgeon called Cheer Up, My Dear Friends.
In it he addressed those discouraged that they could do nothing due to being laid aside by sickness or some other hard providence. I pass it on for its encouragement, especially with respect to the high work of refreshing God’s saints.
The refreshing of God’s saints is one of the highest works in which anyone can be occupied. God will send prophets to his servants at times when they need to be rebuked; if he wants to comfort them he generally sends an angel to them, for that is angel’s work. Jesus Christ himself, we read, had angels sent to minister to him. When? Was it not in the garden of Gethsemane, when he was bowed down with sorrow? Comforting is not ordinary work: it is a kind of angelic work. “There appeared unto him an angel strengthening him.” A prophet was sent to warn the Israelites of their sin; but when a Gideon was to be encouraged to go and fight for his country, it was the angel of the Lord that came to him. So I gather that comforting work is angel’s work. You, dear kind Christian men and women, who think that you are not able to do anything but to condole or to console with cheery words some souls cast down and sore dismayed, you are fulfilling a most blessed office, and doing work which many ministers find it difficult to perform. I have known some who have never known suffering or ill-health, and when they try to comfort God’s weary people they are dreadfully awkward over it. They are like elephants picking up pins: they can do it, but it is with a wonderful effort. God’s tried people comfort each other con amore; they take to the work as a fish to water. They understand the art of speaking a word in season to him that is weary, and when this is the case they may not complain that they are doing nothing.
Paul certainly thought highly of this angelic work. In 2 Timothy 1:16-18 he praised one such angelic servant in these terms:
 May the Lord grant mercy to the household of Onesiphorus, for he often refreshed me and was not ashamed of my chains,  but when he arrived in Rome he searched for me earnestly and found me— may the Lord grant him to find mercy from the Lord on that Day!—and you well know all the service he rendered at Ephesus.
Can you think of someone who might need refreshing through a kind word or note of encouragement. Why not undertake some angel work today?