The best way to do business with a liar is confront them with the truth. Tell them that you do business as a partner. If your lying customer still can't see the light, tell him that you may not be the best choice for business, and that you think you have someone that can serve him better. Then, refer him to the competitor that you hate the most.

Friendly makes sales - and friendly generates repeat business.

Positive mental attitude is determined by you. Not others.

Your grammar is a reflection of your image. Good or bad, you have made an impression. And like all impressions, you are in total control.

A big part of honesty is self-discipline, personal resolve, and taking pride in who you are as a person and what each action means to your character.

If you're not convinced, how can you convince others?

Go to humorous events at comedy clubs and watch laughable movies.