Things I learned from other successful people.
1. Do what you love and you won't have a high risk of giving up.
2. Don't try to win others above you, try winning yourself. In other words, increase your stamina.
3. Win-Win, don't try to win others, try to win together.
4. Even if you don't shine right away, you have to build pressure to shine so even though you don't have your goal right away, you will always bloom. Even if it's in 1 year or 10 years.
5. Confidence is always important, and loving yourself is too but never being egocentric and selfish. And expressing yourself is important too. If there's a shy person, they talk really shy. I'm not saying being shy or not sociable is a bad thing but you should learn how to be happy to yourself.
I'm still reading the book so I might put other stuff later but I hope this helps.