5 Ways Other People Can Help (or Hurt) Your Career

No one builds a successful career alone. The people around you — your mentors, peers, sponsors, and even your critics — shape your trajectory in ways that are often invisible until you look back.

Here are five ways other people can either accelerate or derail your career, and what you can do about each.

1. Mentors Who Open Doors (or Close Them)

A great mentor doesn't just give advice — they make introductions, advocate for you in rooms you're not in, and help you see your blind spots before they become career-limiting.

But not all mentors are created equal. A mentor who is out of touch with current industry dynamics, or who unconsciously steers you toward their own path rather than yours, can actually slow you down.

What to do: Seek mentors who are 10-15 years ahead of where you want to be — not just where they are. And don't limit yourself to one. Build a diverse board of advisors.

2. Sponsors Who Put Their Reputation on the Line for You

There's a critical difference between a mentor and a sponsor. A mentor gives you advice. A sponsor gives you opportunities — and stakes their own credibility on your success.

Sponsors are the people who say "I want her on this project" or "He's ready for that promotion." They're rare, and they're invaluable.

What to do: Earn sponsorship by delivering results that make your sponsor look good. Be visible, be reliable, and make it easy for someone to bet on you.

3. Peers Who Lift You Up (or Pull You Down)

The people you spend the most time with at work shape your standards, your habits, and your ambitions. High-performing peers challenge you to grow. Cynical, disengaged peers normalize mediocrity.

What to do: Be intentional about who you spend your professional time with. Seek out colleagues who are curious, ambitious, and generous with their knowledge.

4. Critics Who Make You Better

Constructive criticism is a gift — even when it doesn't feel like one. The colleagues and managers who give you honest, specific feedback are doing you a favor that most people won't.

The danger is dismissing critical feedback as negativity, or surrounding yourself only with people who tell you what you want to hear.

What to do: Actively solicit feedback from people who will tell you the truth. Ask specific questions: "What's one thing I could do differently in how I run meetings?" is more useful than "How am I doing?"

5. Toxic Relationships That Drain Your Energy

Some relationships are simply costly. The colleague who constantly vents, the manager who takes credit for your work, the peer who undermines you in meetings — these relationships don't just feel bad, they actively harm your career by consuming energy you could be directing toward growth.

What to do: Set boundaries, document your contributions, and if necessary, create distance. Your energy is a finite resource. Protect it.

Your career is, in large part, a reflection of the relationships you cultivate. Be intentional about who you let into your professional circle — and be the kind of person others want in theirs.