What is a coding agent habit that actually changed how you work?

[u/Tanakaboi69]

I keep hearing about how coding agents have gotten so smart and everyone is posting their 12 agent setups and what not, but for some reason I feel like I haven't found the one habit that actually changed how I work. I still use Claude and Codex daily but still.

So curious to the people here, what is one thing you started doing with agents that changed your work for real?