If you could change an aspect of your personality, what would you change and why?

If you could change an aspect of yourself, not something physical but an aspect of your personality and/or behavior, what would you change and why?

Include possibilities such as IQ, mental health, neuroses, emotions or lack of, too ambitious, not ambitious enough, ability to advocate for yourself, too selfish, too selfless, narcissistic, wish you were more studious, tend to procrastinate, wish you were better with money, whatever. The possibilities are endless.

What would you change? Why?