Do not give your attention to ...

Do not give your attention to what others do or fail to do; give it to what you do or fail to do.
Do not give your attention to what others do or fail to do; give it to what you do or fail to do.
 Dhammapada

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

Just as a flower, which seems beautiful has color but no perfume, so are the fruitless words of a man who speaks them but does them not.
 Dhammapada