The idea is that you could sacrifice something of value, and that would have transcendent utility. That is by no means an unsophisticated idea. In fact, it might be the greatest idea that human beings ever came up with
You don’t need anyone’s permission to follow your dreams. You just need to start and see for yourself! No one ever became something overnight, you don’t magically become a writer and then write, you don’t magically become a designer and then start designing, you don’t magically become an entrepreneur and then start a business.
You first start following your interests and if you keep growing long enough, people will be able to recognize you, and that will fuel your becoming. So to become a writer, start writing. To become a teacher, start teaching. To become an artist, start creating. To become an entrepreneur, start solving problems.