What’s the best and worst piece of advice you’ve ever received?

The best advice: Trust your intuition. If something doesn't feel right, there's a good reason for that and you need to be careful.

The worst advice: Don't tell management that what they've heard about you wasn't true, or they'll just get mad and fire you. Just agree with whatever they're saying, even if it's all lies. I probably would have been fired either way, but I should have at least told them the truth.