What are some psychological facts that people don't know?

What are some psychological facts that people don't know?

1. If you announce your goals to others, you're less likely to succeed. You loose motivation.
2. The type of music you listen affects the way you perceive the world.
3. Convincing yourself you slept well tricks your brain into thinking it did.
4. Happy people keeps you happier.
5. The more you spend on others, the happier you feel.
6. 90% of people text things they can't say in person.
7. Your favorite song is your favorite because you associate an emotional event with it.
8. Money spent on experiences will always hold greater value to you.
9. Singing reduces the feeling of depression and anxiety.
10. Some of us are actually afraid of being too happy because of the fear that something tragic might happen next.
11. The longer you hide feelings for someone, the harder you fall for that person.
12. 98% of the time when someone says they have to ask you a question, you recall all the bad things you've done recently.
13. Comedians and funny people are actually more depressed than others.
14. Closing your eyes help you remember things.
15. If you have a crush on someone, your brain will find it impossible to lie to that person.
16. People who understand sarcasm well are often good at reading people's mind.
17. Pretending not to care is the habit of someone who generally cares the most.
18. Women with higher IQs have a harder time finding a mate.
19. The more you talk about someone, the more you're likely to fall in love with that person.
20. The less popular Quoran you are, the lesser upvotes and the views you get. ;).