Например о друге.

Следует упомянуть поговорку, которая гласит "If you lie down with dogs, you will get up with fleas". Это переводится как "с кем поведёшься от того и наберёшься".

Итак..

If you lie down with dogs, you will get up with fleas. I started with this proverb to mention that every person effects us. Every person has an influence on us. 

Either friends or parents effect on us. It causes on our behaviour. If we are in a good company we won't have a reputation of a bad person. 

AsGeorge Washington said "Associate with men of good quality, if you esteem your own reputation, for it is better to be alone than in bad company."

Ну что-то типо того..