The Four Agreements by Don Miguel Ruizby Parker on TwosChapter 2: The First Agreement: Be Impeccable with Your WordThe first agreement is the most important one and also the most difficult one to honor.Impeccability means “without sin.”A sin is anything that you do which goes against yourself.When you are impeccable, you take responsibility for your actions, but you do not judge or blame yourself.Sin begins with rejection of yourself. Self-rejection is the biggest sin that you commit.