You can get what you want more easily if you're nice to someone than if you're mean.
Which would be the best revision to this sentence if you were asked to include a colloquialism?
1. Getting what you want is like attracting bees to honey.
2. You attract more flies with honey than with vinegar.
3. You should be as nice as grandma cooing to her babies.
4. People in glass houses shouldn't throw stones.