When promotions were at stake, I followed the advice keep your friends close, and your enemies closer, watching every move to ensure no one could ruin my career.

We rehearsed every scenario, but in the field we learned that no plan survives contact with the enemy.

To be one's own worst enemy is the quickest way to sabotage a promising career.

In our project, we can't let the perfect be the enemy of the good, so we'll release a stable version and improve it later.

When designing the app, don't make the perfect the enemy of the good by insisting on flawless features before releasing any updates.

When planning the product launch, remember that perfect is the enemy of good enough, so ship the MVP on schedule.

Anyone who habitually sabotages their own plans is one's own worst enemy.

After missing several chances because of self-doubt, one realized one was one's own worst enemy.

After months on the run, the FBI finally captured the suspect who had been labeled public enemy number one.

To admit that one has been one's own worst enemy is the first step toward change.