We can sometimes embark on making a major change without proper preparation. This refers to a habit we have had a long time and now wish to change. We have our habits for a reason.
Sometimes the reason is buried in the past and we don't remember how it started. It is not really important to understand why it started but to understand why we keep it. It meets a need no matter how deep or superficial a need it is.
If we want to change something then we should first understand why it exists. Then we can decide to eliminate or replace that habit with one we want.