Disagreeable individuals earn significantly more than agreeable people, especially men. The "agreeableness penalty" is real.
Willingness to compete, negotiate aggressively, and prioritize self-interest leads to better salary outcomes.
Disagreeable people ask for raises, negotiate harder, are willing to appear "difficult," and prioritize their own advancement. They don't sacrifice salary for likability.
Steve Jobs was famously disagreeable but achieved extraordinary results. Demanding negotiators consistently outperform accommodating ones.
If highly agreeable: practice negotiation skills and advocacy for your own interests. You can be kind AND advocate for yourself.
Stop guessing if you have Low Agreeableness. Get a definitive score in 4 minutes.