First of all, I know you guys get these questions all the time. Yes, I've read ZapperZ's wonderful account. Yes, I've tried to solve old Physics GREs and Qual exams. No, that hasn't been enough to discourage me. Please try harder. I have a BA in the humanities and a MSc in humanities too and a ridiculous need for Physics. First I did what anyone would have done and imagined I was just burnt out from writing my Master's thesis and figured I could audit an entry-level class and quench it and move on with my PhD on almost-humanities. So I audited that one class. It only left me wanting more. So I decided to go on a quest to find the minimum possible amount of Physics I could have in my life and still feel happy. First I covered the material equivalent to Calculus in one variable and Physics I and II on my own. Then, I audited calculus in several variables, linear algebra, vector calculus, mathematical methods (thank god for Boas), quantum physics (not QM yet), theoretical mechanics and astrophysics. My plan to oversaturate myself so that I would happily go back to my career failed. Plus, it still doesn't feel like I'm getting enough Physics in my life. Now my little experiment has backfired and I catch myself daydreaming of ways I could make a lateral career move, while the other half of my brain is shouting that I have no solid background and enjoying learning about Physics does not necessarily translate into any ability for actually doing research in Physics and why can't I just dream of opening a cupcake bakery like normal people. I spend weeks alternatively focusing all my energy on my "real" job and getting results that make my lab happy but make me feel dead inside and weeks poring over Physics books because I just need to understand one more thing about the world while my productivity goes like e^-x. So, please, dissuade me. And if you can't, I would really appreciate some advice, deep down I feel really lost. Thanks!