How can we figure out what God wants us to do?

I know people who are lawyers and who drive big machines and who are school teachers and who are coaches and who are selling insurance and who are accountants and who are science research professors and who are dentists and who are pastors and who are missionaries. What each of these people does matters. I kept thinking about this word—matters. I’m unconvinced that some jobs —the so-called “spiritual” ones—are valuable while others are “secular” and therefore not as valuable.