Hey worrist
I feel the same way, but am getting past it. For me it was tied in with my psychological issues, like over self-criticism.
I'd feel that others thought I was lying about being sick, that they didn't trust me, but really it was the lack of trust in myself that I was externalizing.

Our culture definately expects a lot from us, work wise, but they do not own us and they do not have the right to make our lives miserable.
We deserve to be happy, even in our jobs, money just isn't worth that sacrifice.

I'm digressing, you say your work is good, so that's good.
It sounds like you are just too hard on yourself, like many of us are. Figuring out why you are such a tough critic is the first step to quieting it.