If you haven't read this book I highly suggest you pick it up ASAP! It is titled : The Four Agreements by Don Miquel Ruiz. It has truly changed by out look on life and I try to uphold the agreement every single day.
Be Impeccable with your word
Do not take anything personally
Do not make assumptions
Always do your best.
Make it a point to remember these for agreements and watch how different the world will change for you. You will see your relationships, work, EVERYTHING in a new light for the better.