What’s one AI coding habit that genuinely improved your productivity?

I’m trying to build better programming habits this year and wanted to ask other learners/devs here:

What is one AI-assisted coding habit that actually improved your productivity (without making your fundamentals worse)?

I’m not looking for "just use AI for everything" answers — more like practical workflows, for example:

• using AI to draft test cases first
• using it for rubber-duck debugging
• using it to explain unfamiliar codebases

If possible, share:

1. your stack
2. the exact workflow
3. what measurable improvement you saw (time saved, fewer bugs, faster learning, etc.)

Would love to collect real, non-hype examples people can copy.