Working on API, Services and a lot of automation. At some point I got really into the habbit of TDD. Now I just can't go without it anymore. When I am thinking of a feature, I am always thinking of the test first. It has gotten to the point where it feels like I am walking around naked when I write test-less code/features. It's not just that I have gotten used to it, because whenever I coded myself into a corner, without tests, it seemed like the answer was having tests first. At least, it would have caught a lot of the issues I would have run into later.

https://www.youtube.com/watch?v=iwUR0kOVNs8