This is MILD. The goal of the exercise is developing your chances of remembering your intention that you wrote down in the paper. None the less, I think it really shows effort and dedication if you wrote it down 160 times in 3 days.

Most likely your expectations towards the exercise gave you some help to achieve those lucids (I also tried this some years ago and did get a lucid once), but I'd say this is a great way for those people who can't really get a grasp for mantras or have a hard time focusing on the "thought". Writing sentences might achieve the same effect and it's a more "get it done" exercise than things like visualization. Thanks for sharing