This is a great article but I respectfully disagree on a few points. I don’t think people necessarily need a teacher, and it’s often beneficial to explore spirituality with only their own inner voice. I do agree that reading books such as those written by authors you mentioned is a good idea, though.
I also think that the universe absolutely will support you if you quit your job and take that leap. Staying in a job that’s breaking your soul is not beneficial - money isn’t everything!