How to Find Your "Self"

I have no idea if I've written about this in the past. I need to go and review all my writings at some point. I was reading Steven Pressfield as many bloggers and podcasters do. I like his work, but I'm honestly sick of everyone quoting him. Anyway, he wrote something about his "shadow career" as a truck driver, when he "knew" he wanted to be a writer. But how can we know?
I think the first thing to do is to watch our language. To "know" seems to imply thinking, with our heads, when in reality a way to "know" can be with the heart. And of course the "language" that the heart speaks is abstract. A good way to listen to the heart is to simply become present, aware of all the five senses and then get a certain confidence, a certain awareness of what it is we're supposed to be doing. It's more of something that comes to you, rather than you figuring it out.
I think much of this is paradox. Our true path is something that excites us and terrifies us at the same time. Sounds like witchcraft or a child playing with a Ouija board. But if it's one thing I've learned, it's that life is paradox: a friend can be both the best and the worst person for you, a job can be both the worst and the best thing in your life at the same time. The challenge is getting comfortable with these two seemingly polar opposites, until a third solution, which is your path, emerges. This is the "self," and therefore it can tell you who you're supposed to be. It can also tell you whether you're in a shadow career or not.