1. Make sure your words pass the three gate test - are they honest, kind and necessary? If not, please don't utter them.
2. Do not use offending words (words that hurt someone's dignity).
3. Do not judge others and give a name unless that's your job.
4. Make a habit of using more positive words-like I did a few days back when I had to send an SMS to a friend. First I wrote, "Please do not forget to...."; then I reminded myself of being positive and changed the message to "Please do remember to....". Try this out:)
5. Leave the place where others are indulging in negative conversation like slander, idle gossip, criticism etc. I always do it, and it helps in staying positive.
The power of words is further reinstated by the rigorous effort by scientists in capturing the hymns and chants of vedas and ancient spiritual scriptures. Medical science is using spiritual/ devotional music for curing chronic diseases. Agriculturists are using Gayatri Mantra for getting bountiful yield (and the results have been quite encouraging).
Some people have such a charm or positive aura surrounding them that we feel like being with them without any requirement too, on the contrary some people have such a repulsive aura that we dread going near them:(. Let's come in the first category).
Happy talking.