So I have been struggling a bit with the meaning of concentration. You can find that when you think you are concentrating all you are really doing is squinting a bit, or pushing down on your breathing. You may think about it a little and conclude that concentration, becoming more focussed, is actually impossible because conscious is conscious, always 100%. There are definitely some strong arguments against.
But there are also some arguments for. When I am reading a good book or watching a good film, I become so concentrated that the rest of the world fades from my consciousness. But that doesn’t necessarily mean I become more aware, rather the opposite. Then I recall some instances of studying at University where I was trying to focus and did ok.
Possibly the best argument was one I heard that the Buddha gave, that for him it was as if “his house was on fire”. This inspired me to think back to the few times I have actually been in mortal danger: once or twice walking in the mountains when I was young and foolish, once when bungee jumping. It concentrates the mind wonderfully.
So as an experiment I started meditating on situations of peril, starting with being trapped in a burning building. It worked rather well in terms of providing fuel for concentration...
How have you worked with your concentration?