Have it do stuff you know how to do, just a lot faster. Or, even if you don't know exactly how to do it, check what it gave you to see if it produces expected results.

For example, it gives you code. You run that code to see if the outputs are as expected.

It does coding things extremely well. Are there some errors here or there at times? Yes but in general it does it excellently. I think this is a good example of not letting the perfect be the enemy of the good.

It will write 200 lines of code for me which would maybe take me a few hours. I have to spend 15 minutes cleaning it up, but still it saved me 80% of the time. It's a massive win.

Also great for writing articles, or emails. I write what I want to say into ChatGPT and tell it to state rewrite it to be pleasant and less harsh and it does a great job of that.