The problem is, you conflate reasonable doubts with irrational outside influences. It's not as if people who want to be entrepreneurs can't also want to get a law degree. Entrepreneurial ambition is not the only kind, and there are many legitimate reasons that a smart person might want to get a professional degree, aside from "society told me to do it".
The idea that you need to commit yourself wholly to whatever path you choose is well-taken, but the notion that you must eliminate all doubt in order to act decisively is excessive (and impossible).
