Three Performance Review Mistakes That Could Sabotage Your Career

The High Stakes of Getting It Right

Performance reviews carry more weight than most employees realize. The way you handle your performance review can "define your relationship with your supervisor" going forward , according to career coach Sarah Baker Andrus. Yet despite their importance, workers consistently make predictable mistakes that undermine their professional standing and future opportunities.

Many managers dread performance review season because "nobody wants to give somebody negative feedback." This mutual discomfort creates a delicate dynamic where your response can either strengthen or damage crucial workplace relationships. Understanding the most common pitfalls helps you navigate these conversations with confidence and professionalism.

Mistake One: Recycling Last Year's Self-Assessment

One blunder that Andrus often sees is that employees will simply copy their self-assessments from the past year, rather than writing a new one. "That sends a signal that you're not committed to growth and development," she says. "It's a huge mistake."

Employees should view self-assessments as "a record of your performance that other people will refer to," Andrus says. That's why it's crucial to spend time thoroughly filling out your self-assessment and getting materials like your brag doc ready ahead of the meeting. "Everybody hates doing it, but you've got to take it seriously, or you're not taking yourself seriously," she emphasizes.

Mistake Two: Becoming Defensive When Receiving Criticism

It's a "huge red flag" when someone immediately starts arguing with feedback during a performance review, according to Andrus. As an employee, "the important thing is that you do not react in the moment," she says. This knee-jerk defensiveness can permanently damage your professional reputation and close off opportunities for meaningful dialogue.

Instead of arguing, Andrus recommends strategic language choices. If you don't agree with the criticism, Andrus says she likes using language like, "That's disappointing," she says. Instead of starting an argument, she recommends following up with "I'm not sure I agree with this — are you willing to continue the conversation later?" This approach demonstrates emotional maturity while keeping the door open for productive follow-up discussions.

Mistake Three: Turning Reviews Into Complaint Sessions

Another common mistake Andrus sees is that employees will "bring up issues and problems that deserve their own meeting" during their performance reviews, such as a conflict with a co-worker or scheduling concerns. This transforms what should be a strategic career conversation into an impromptu grievance session.

Performance reviews should focus on your professional development and achievements, not workplace drama or operational issues. These conversations require separate meetings where both parties can dedicate proper attention to resolution. The best thing employees can do for themselves is to practice "emotional management," according to career coach Sarah Baker Andrus. Remaining calm and engaged during the meeting will leave a good impression, she says, while becoming defensive or flustered can reflect poorly on you.

Setting Yourself Up for Success

The most successful employees approach performance reviews with preparation and intentionality. Employees should come into their performance reviews "having thought through what contributed to their wins and what contributed to the places where they think they could have done better," Andrus says. This self-reflection demonstrates professional maturity and commitment to continuous improvement.

Rather than dreading these conversations, view them as opportunities to advocate for yourself and strengthen your professional relationships. With proper preparation and emotional regulation, performance reviews become powerful tools for career advancement rather than sources of anxiety. The key lies in approaching them strategically, focusing on growth rather than defensiveness, and treating them with the seriousness they deserve.