If you criticize others' ideas, they will almost never use yours no matter how good they are.
We are what we repeatedly do but we can be perceived by what we repeatedly say.
People buy from people they trust and they trust people they like.
Long-term success is the result of relationships built on a foundation of trust. People get more value from those they trust.
You can't change people but you can effect a change in them by your behavior.
People buy-into what they can understand quickly. If it takes you a long time to make your point, most people think you don't have one!