For a long time, I thought I would like to be a doctor. Such a good profession. So explicitly good. Never a waste of time.
Following our inner guidance may feel risky and frightening at first, because we are no longer playing it safe, doing what we 'should' do, pleasing others, following rules, or deferring to outside authority.
I think it's imperative to follow your heart and choose a profession you're passionate about, and if you haven't found that 'spark' yet, if you're not sure what you want to do with your lives - be persistent until you do.