Initially it tells you when you are not true to yourself. If you continue to ignore it, it will someday stop telling you. If you continue to listen and think over it and correct yourself after listening, it continues to tell you where you are going wrong.
So, I started to listen, and later tried to correct also. Now there are very less(almost no) instances when it makes me realise I am going wrong.
This doesn't mean, I can't lie to you or I will not hide something from you. I have a different approach towards that. But yes, I will not lie to hurt somebody.