[jbrains]

> I feel guilty when our customers have repeated bugginess in our app.

You might be feeling over-responsible for the bugginess in your app. If you did your job perfectly, which forces in the environment around you would still cause you to ship bugs?

In your shoes, I would still want to do everything in my power to limit the bugs that I ship---that's why I practise TDD, for example---but I look carefully for the boundary between what lies within my control/authority and what doesn't, then I refuse responsibility for what doesn't lie within my control/authority. And that was a more-than-a-decade-long change in my mindset.

Not everyone likes TDD; I don't mind. I have a system that helps catch my mistakes sooner, so that I limit the associated damage. I have a very effective system, which I trust, and which therefore allows me to work aggressively: if I can recover from failures inexpensively, then I don't need to agonize over failures. If I drive the cost of failure down close enough to 0, then I don't need as urgently to limit the probability of failure.

What can you do in your work that might help you limit the cost of failure? If you had that, maybe you'd feel less guilty about making mistakes, because you'd done significant work to limit the cost of those mistakes.

Good luck.