Deceitful

You have spent your entire life lying to those around you, you gain the following benefits:

• Increase your Charisma score by 1, to a maximum of 20.
• You gain proficiency in the  (Deception) skill if you are already proficient in (Deception) skill, instead you gain expertise. 
• You've been deceiving those around you your entire life, and with mastering the skill, it has also made it easier for you to tell when others are lying or deceiving you. If you roll a Natural 1 (one) on the  (Insight) skill against those who are attempting to deceive you you can reroll the dice.