One of the most enlightening moments in my career was when I discovered a new coworker was making more than me during my stint in S&P Capital IQ. I remembered casually asking him one day “How much is your salary?”. When I found out it was $40,000 more than mine, I felt resentful, jealous, and unappreciated. How could someone who had the same job title and the same experience make 40% more than me? After soon finding out, I started to leave the office earlier than usual, justifying it by the fa...