Why break the habit of a lifetime? rhetorical question
Said when someone doubts his intention to change the bad habit.
Jane: "I promise I will quit drinking." Lisa: "Why break the habit of a lifetime?"
It means people cannot change their nature like personalities, habits, etc.
1. If you say enough bad things about someone, some of them will be believed.
2. Try many different ways or ideas, some of them will work.
To refer to a clear sign that something bad will probably occur.
The negative aspects of human nature.
If you fall for someone's trick the first time then they are at fault.
Are you going to mess with me again? Fool me once, shame on you; fool me twice, shame on me.