Discipline ?

I have known people who professed no trust, belief or delight in God, who were able to give up destructive habits, seemingly permanently with an expressed resolve that was difficult not to admire.
I have read stories of the discipline (ascetic or otherwise) followers of various deluded cult leaders exhibited in pursuit of what most of us would see as irrational objectives.
"Discipline is the bridge between goals and accomplishments." Jim Rohn said this.