What are the basic things people should understand?

Our life is packed with lots of lessons, some we learned instantly like when we touch a hot stove. And others take time and understanding to learn for example learn about wht it means to be truly in love. But everyone of us need to understand some basic things in life. Like:

• You can make or break the habits in your life.
• Your reading influence your personality
• The relationship with yourself is most important
• Your personal reputation is everything

Guys, what do you think what are the basic things people should understand?