The ego tends to equate having with Being: I have, therefore I am. And the more I have, the more I am. The ego lives through comparison. How you are seen by others turns into how you see yourself. If everyone lived in a mansion or everyone was wealthy, your mansion or your wealth would no longer serve to enhance your sense of self. You could then move to a simple cabin, give up your wealth, and regain an identity by seeing yourself and being seen as more spiritual than others. How you are seen by others becomes the mirror that tells you what you are like and who you are. The ego's sense of self-worth is in most cases bound up with the worth you have in the eyes of others. You need others to give you a sense of self, and if you live in a culture that to a large extent equates self-worth with how much and what you have, if you cannot look through this collective delusion, you will be condemned to chasing after things for the rest of your life in the vain hope of finding your worth and completion of your sense of self there.
— Eckhart Tolle