People don't change their basic nature, they just accumulate more stuff upon which they can apply their stupidity, selfishness, and horniness. From t… - Scott Adams

Never laugh when you're being sarcastic. It will ruin the effect. If you feel the uncontrollable need to giggle, wait until your boss says something hilarious, such as, "Is this only Wednesday? It feels like Friday already!" Then you can throw back your head, open your mouth like you're about to swallow a live porpoise, and laugh like a naked teenager in a field full of pussy willows. Sincerity like that will make your sarcasm all the more convincing.

People think they follow advice but they don't. Humans are only capable of receiving information. They create their own advice. If you seek to influence someone, don't waste time giving advice. You can change only what people know, not what they do.

The things that have the most mental impact on you will irrationally seem as though they are high in priority, even if they are not. That's persuasion.