Firstly, you're already making a very insightful observation about the problem you've encountered. There's some truths that may sound easy or obvious, but may

Firstly, you're already making a very insightful observation about the problem you've encountered. There's some truths that may sound easy or obvious, but may or may not be hard to internalize. They may be intellectually truth, but part of your mind doesn't yet believe them. Your work doesn't reflect your worth as a person. You do your job but your job doesn't say who you are. The faster answer is some form of therapy and/or meditation. You would most likely start by observing when you feel most negative, naming the feeling, and exploring the part of the mind that the feeling originated including any core beliefs that formed the negative feeling.