Wise words about worry

I've read numerous books on the subjects of worry and anxiety but this quote from former major league baseball player, Mickey Rivers, may be the best of all:

Ain't no sense worrying about things you got control over, because if you got control over them, ain't no sense worrying.  And there ain't no sense worrying about things you got no control over either, because if you got control over them, ain't no sense worrying,