The simple Toltec principles as espoused by don Miguel Ruiz Sr. and don Miguel Ruiz Jr. are profoundly effective.

I. Be impeccable with your word.

(integrity... say what you mean, mean what you say, but don't say it mean.)

II. Don't take anything personally.

Others actions toward you is a projection of their own reality.

III. Don't make assumptions.

Communicate clearly.

IV. Always do your best.

You will never have to apologize for doing your best.