To brake a habit you create a new habit

first of all you needs to clarify that there is no good or bad habit
but in order to get clear sense of mind you need to change your point of view to shake your foundation of thought

you biggest habit is drifting away with your thoughts, to break this habit you simply shut it off
don't think anything at all

try it for 10 seconds 20 seconds, gradually increase the duration of this practice