"Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things." Philippians 4:8 (NIV)
It is so easy to fill our minds with the often-gruesome things of this world. This verse doesn't mean that we should shut out our eyes to the world's pain. No, we are sent into the world. However, we do need to be mindful of what we think about throughout our days. Very mindful.