Good for you! I think the post you mentioned referenced an article in Aug-Sept 2015 issue of Traditional Bowhunter, Three Common Shooting Mistakes, by Denny Sturgis. I've reread the article several times, as I make all three of them regularly.
I find that if I'm relaxed and shooting for fun, I don't need to do that, but when I feel any pressure, it sure helps to focus on a spot on the back of the riser to help me relax enough to get to full draw. Then I keep focusing on the spot for a second or two so I can check my body alignment. Then when I feel like everything is okay, I can focus on the target and aim.