I have long history of testing and I have moved test automation world. During this transition I have lost some of my testing skills and I have stated make certain type of bugs in my projects. As a developer, I have come blind to some user perspective features. This is story of what mistakes I have done in my projects, why I now understand my developers colleagues better and what I have done to regain my past knowledge as a tester. When I have got know my tester side again better, it has helped me to write better code and make less bugs in my projects. In this story I hope to educate my colleagues why making mistakes is human and what I have done to avoid those mistakes.