The Chassidic master Rabbi Simcha Bunim used to say:
Everyone should have two pockets. In one, there should be a note that says bishvili nivra ha'olam (The world was created for me). Sanhedrin 37A
In the second there should be a note that says anochi afar va'efer (I am dust and ashes). Genesis 18:27
This is a teaching about how to live a balanced life.