The important thing is to concentrate upon what you can do - by yourself, upon your own initiative.
I am concentrating on my fitness levels so that I don't look old.
I've got a terrible memory; it's probably because I'm always concentrating on what I'm doing now.
I am concentrating docilely on the question why U.S. restrooms always appear to us as infirmaries for public distress, the place to reagain control.
Beware of any work for God that causes or allows you to avoid concentrating on Him...
Risk can be greatly reduced by concentrating on only a few holdings.