You have a bad habit. You are not the bad habit. That gap is where change happens.

A habit is something you do, often and automatically, and describing yourself as the habit closes off the exit. If you are a lazy person, there is nothing to work on, because that is a report on your nature. If you are somebody who has been going to bed at two, there is a specific behaviour sitting there waiting to be changed.

Rewrite one of your self-descriptions as an action this week: not disorganized, but has not been writing things down. Then change the action in the smallest possible way and keep the person out of it. Progress is much easier when there is no identity to defend.