“I got passed over for promotion and I'm bitter”

What could be going on

Resentment: Fits if the anger keeps replaying but isn't said to anyone.

Organisational justice: Fits if the process felt unfair.

Envy: Fits if you feel pain at the other person's gain.

Narcissistic injury: Fits if it feels like a blow to who you are, not just your career.

Confidence-competence gap in leader selection: Fits if the person chosen was more confident than competent.

Ressentiment (Nietzsche): Fits if the bitterness turns into contempt for what they have.

Also said as

• they promoted someone else and I'm furious
• I didn't get the job I deserved
• I'm resentful about being overlooked at work
• how do I get over not getting promoted
• I was overlooked for a promotion
• I'm angry I didn't get promoted