How to ask your manager for a new role, according to a 20-year HR manager

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• Ashley Herd spent over 20 years working in HR before launching her own company.
• She said employees should consider the hardest parts of a new role before requesting it.
• Herd also shared key phrases to use when asking for a promotion or a new position at work.

This as-told-to essay is based on a conversation with Ashley Herd, the 43-year-old founder and CEO of Manager Method in Atlanta. It has been edited for length and clarity.

Before starting my own company...