Human with weak heart have greatest courage to lie. Human who is weak enough to be honest to11 others will do some great jobs in covering their weakness. Taste of telling lies is bad, after telling some lies someone cannot stay calm, she cannot stay still, she wants to tell more lies. But, because she has a human heart she will feel guilty afterwards, this guilty will make her want to disappear.
When a human who frequently tells lie, to be honest is really hard. Honesty is a taboo thing, honesty is unnecessary. Because if you can tell lies, why bother to tell the truth? This is the opposite of normal human conscience, right?
Ask to yourself, do you have something you cannot tell? What did you do about it? Keep silent. But then, if someone asks you about it? What will you do? Remain silent? Say that you do not know? Do you dare to tell the truth, even though someone might think you are not a good person because of the truth?
Truth is better than LIES.
But lie is an addictive, that's why people who tell lies and succeeded to make everyone believe, will try to tell a lie again.