There is no pleasure in life equal to that of the conquest of a vicious habit.

Ill habits gather unseen degrees, as brooks make rivers, rivers run to seas.

We must make automatic and habitual, as early as possible, as many useful actions as we can...in the acquisition of a new habit, we must take car to launch ourselves with as strong and decided initiative as possible. Never suffer an exception to occur till the new habit is securely rooted in your life.

To stop smoking is the easiest thing I ever did. I ought to know; I've done it a thousand times.

The phrases that men hear or repeat continually, end by becoming convictions and ossify the organs of intelligence.

Break a bad habit -- drop it

It's just as easy to form the habit of succeeding as it is to succumb to the habit of failure. Habits aren't instincts; they're acquired reactions. They don't just happen; they are caused. Once you determine the original cause of a habit, it is within your power either to accept or reject it.

Trivial things do matter... more people are killed each year by the bite of mosquitoes than are stepped upon by charging elephants.

Habits change into character.

Practice in time becomes second nature.