Thought I'd share quotes from a book I've found helpful and inspiring.
The Four Agreements (A Practial Guide to Personal Freedom) by Don Miguel Ruiz. Author says book is from the Toltec knowledge from southern Mexico (which I don't know anything about).
1. Be Impeccable With Your Word
"The first agreement is the most important one and also the most difficult one to honor. It is so important that with just this first agreement you will be able to transcend to the level of existence I call heaven on earth. ... Your word is the power that you have to create. Your word is the gift that comes directly from God. ...Depending upon how it is used, the word can set you free, or it can enslave you even more than you know."