If you work in any organization, you are always going to have friends and you are always going to have enemies. That is if you are any good. Medium performers can have only friends, but top performers always have enemies.
Oscar Wilde said, “Always forgive your enemies; nothing annoys them so much.” Robert Greene in his classic, POWER, has a section on how to use your enemies. I recommend it to you.
Lesson from here, if you don’t have enemies, you are probably not performing well enough. Don’t go out and create enemies. Just perform in an outstanding way and they will appear.
If you do have enemies, learn to use them. As Greene can demonstrate, enemies can be more useful than friends.