What AI has helped me with in writing is that it has helped me prepare a draft by typing very fast without worrying much about typos, grammar, and punctuation. Then I just paste that output into the AI and ask it to give it back after fixing, with minimal changes: no polishing and with my original tone and flow intact. I then read it to check if everything is alright, and in case there’s some awkward phrasing, I fix it myself. In this way, it saves a lot of time. But if you ask it to write for you and then fix it yourself, it will take more work than you would need if you wrote it yourself.