I was thinking of someone in the middle of the night who peculiarly irritates me. This sort of corrosive irritation is actually as debilitating to the mind as anything. I tried an experiment to pray for him. To ask God to help him do what he wanted to do, to help him succeed. Immediately I was faced with a kind of wave of intense resistance. An ugly wall, rough, seemingly made of asbestos. I am far too rational, I hope, to believe that the Devil, if he exists, works in this way, but the feeling was so immediate, it was as if some force was preventing me from doing the right thing, but I persevered. I had nothing else to do and the wall dissolved gradually, as did my feeling of irritation. Perhaps the trick works.