Breaking a habit can be difficult, but it is possible. The crossword solutions for the term 'break (a habit)' are WEAN, KICK, and STOP. To break a habit, one must first WEAN themselves off of it, which means to gradually reduce the amount of time spent on it or the frequency with which it is done. Then, one must KICK the habit by completely stopping it. Finally, one must STOP the habit altogether in order to break it.