I talked to a good friend who is in recovery today. He said that today he was just "mad at God". It was a day that was stressful, filled with self-pity and envy for him. I've had too many of those days but never felt angry at my Higher Power. When I get into those kinds of moods, I am generally very angry at myself for once again being the one who apologizes or forgives when I haven't actually done anything wrong. I also have found that writing down prayers to my Higher Power helps a lot. One of them might go, "Help me to take care of myself, to let go of my fears and resentments, to recognize what a unique and creative person I am, and revel in taking another breath and having another day to live. Let me appreciate my talents, the beauty of my surroundings and the ability to make good choices. Let me learn from my mistakes, yet treat myself with kindness for my misgivings."
If I am angry at something, it won't be at my HP. It will be at myself for sinking into the swamp again and getting mired in self pity, resentments, and all the other garbage that runs around in my head. I think that my friend needs to revisit his steps and take his inventory.