Ask HN: What processes/methods do you find helpful in your day to day work?

I searched but couldn't find something similar. I was debugging an issue today and had to write a short script to get the list of affected entities.

I came from a C++/C# background and I'm newer to using IPython, but it's absolutely changed how I develop for the better. I definitely feel more productive, but I can't prove it.

That being said, I noticed that adhering to some more discipline while writing the script, like using a real debugger instead of print debugging, writing types for my functions instead of passing around tuples/dicts, and tests probably would've helped even more.

So HN, what processes/methods do you find helpful in your day to day work?

Another way to phrase this is what things have you learned that changed how you work for the better?