Decent post and good points: I've observed similarly about myself over time... even an interval of as little as six months. I write something and leave it in draft, or deliberately postpone doing or saying something to make sure I still feel the same way, after letting time pass. (This isn't with things I need to do, nor procrastinating.) I like it as an alternative to being impulsive.
How is the post an example of mindfulness? I'm not sure I know what mindfulness is.