Start by keeping a journal whereby each day you record if you told a lie, then write down the reasons behind why you lied. Was it for some advantage, such as to obtain something, or was it to look good to someone, or that you did not wish to disclose something? Then look at the reason and try to determine if it has happened before. If there is a pattern, write down all of the cons to telling this lie, such as guilt, sadness or just low self-esteem. Make a mental note of how the outcome would have been if you had told the truth, and these will become your 'pros' of telling the truth. You obviously wish to stop the lies, now it is just a question of practice or putting into play what you sincerely XXXXX XXXXX do. I hope that this was helpful to you.