If you believe the statement the truth shall set you free then you know how powerful satya is. Being truthful brings about calmness in us because we know we've left no tracks to cover up. We are unburdened by fabrications that need remembering and elaboration. Our conscience becomes liberated because we have not intentionally hurt another with lies.
Practicing satya begins with our selves by being true to our own destiny. We look inward and ponder where we need to go on our journey of growth. Then we need be honest with our selves and follow that path even if it brings some discomfort along the way.
In his book, "The Four Agreements" (see Books and Other Inspiring Reading on this site), Don Miguel Ruiz teaches a powerful code of conduct that when followed leads to a life lived in freedom and happiness. The first agreement that he suggests we make with ourselves is being impeccable with our word. It may be the most important and difficult agreement to follow. Ruiz writes, "The word is the most powerful tool you have as a human; it is the tool of magic. But like a sword with two edges, your word can create the most beautiful dream, or your word can destroy everything around you. One edge is the misuse of the word, which creates a living hell. The other edge is the impeccability of the word, which will only create beauty, love, and heaven on earth. Depending upon how it is used, the word can set you free, or it can enslave you even more than you know."
Honest thought, communication and action are the basis for every healthy relationship. Purposely being deceptive and untruthful only causes harm to your self and others. When we speak only the truth people will listen and give their respect. By being truthful with others we provide them with their much-deserved respect as well.
Satya pratishthayam kriya phala shrayatvam. (Upon being established in truth, there is surety in the result of actions.)
-Pantanjali Yoga Sutras ii:36