Meh I don't think you're doing anything wrong unless you suffer some kind of condition or attention deficit.
One thing about these motivational speeches or techniques is that sometimes we just think we'd like doing something new, but deep inside our mind we really do not want to have that new habit. In those cases what we typically really want instead is to be the person who had already cultivated the habit for a long time. Thus if you think about your objectives and realize this description matches how you feel, that's a signal that you don't really want to do that, it maybe just feels cool to imagine yourself doing it.
A practical example. Not sure if here on HN or where, but I heard once this principle applied to playing the guitar, which I've always wanted to do. After asking myself I realized that I don't want to learn how to play the guitar... what I really want is to be the guy who already knows!! :-) And that explains why I tried learning guitar... like 5 times already in my life. And always ended up stopping practice after some time. I was just misguided by the cool imagination of me taking out a guitar and playing a song, but in the real world that takes practicing regularly, which I'm not willing to do (even though when I'm at it, it feels fun, but clearly not enough to keep me persevering).