Research from "Nature Human Behavior" shows that for individuals in the US, an income of ~$105K is about optimal for life satisfaction. Naturally, that level depends on where you are, the cost of living , and even your perceived income of the people around you. In fact, beyond that, happiness tends to deteriorate. A stable income of that level is very possible, but it does require an education, or entrepreneurship.
At that income, you will find that you stop worrying as much about money and much more on what you are doing in your day to day life to drive personal satisfaction, often through your job, but also through your personal endeavors or family. Ambition beyond that, is usually more about maximizing your impact on the world and less about the material things you can acquire with additional income