I carried this new found love of unit testing with me to each new workplace. I taught the passion and associated skill set to whichever colleagues would listen. At my last workplace, I declared myself the _Unit Test Evangelist_ and taught my team everything I knew, and together we improved on the knowledge and skills I brought with me. We had great philosophical discussions on how to think of approaching legacy code with tests, and what kind of tests were the most important to write in various situations.