Money comes and goes. I'm thankful I have money. I'm trying to save up more. I would like more money. But it's not happiness. If you're a millionaire and hate your family, hate your friends and your life, then what is the point? You're just a person with a lot of money and power who is not happy.
If we choose an external marker as the measure of our inner worth, whether it is the amount of money we make, or others' opinion of us, or the success of some project we're involved in, sooner or later we're bound to be battered by life's inevitable changes. After all, money comes and goes, and thus is an unstable source of self-esteem, an unreliable foundation upon which to build our identity.
Money is one form of power. But what is more powerful is financial education. Money comes and goes, but if you have the education about how money works, you gain power over it and can begin building wealth. The reason positive thinking alone does not work is because most people went to school and never learned how money works, so they spend their lives working for money.