Yeah, I hear you. Even with my most recent endeavor, moving to Boston, there have been times where I have questioned it, I push on.
Sometimes you have to learn through trial and error. Your life doesn’t have to be lived in fear that you are going to make the wrong choice and waste time on something else because God is always revealing himself to you through your life experience.
As long as you give it an adequate amount of discernment (and it’s not heretical) I think you should feel pretty safe that you are acting in accord with God’s will.