Setting boundaries
People (your boss, an empowered coworker?) will take advantage of you unless you set boundaries. Every time you jump like a bunny to respond, you’re reinforcing their view of you as a scared rabbit willing to work late, always be available, come in when sick, do their work for them, the list goes on and I’m sure you’re adding a few in your head as you read this.
No one cares about you or your career more than you. I say this repeatedly throughout this guideboook with love and warmth and honesty. It’s up to you to diplomatically and intelligently set boundaries.