The book has its own golden house, and the book has its own words like jade

Learn and practice it over time, it is easy to say

Happiness is a luxury . To enjoy it, the indispensable condition is that you have no worries. If you are uneasy - even slightly threatened - your happiness will evaporate immediately. ——Stendhal

I never regard comfort and happiness as the purpose of life itself---this ethical basis, I call it the ideal of the pig pen. ——Einstein