It is better to have something doing doing and something working out already before going into a relationship. The very least, have a proof that you're working and not lazy.
Some might say get into a relationship and figure things out together. Hmmm, it might not be as easy as said. Depends on the partner too and how much both parties trust each other's vision and goals. Like in the case of your second relationship, you left because you knew you had nothing to offer then except words. What if Stephanie would actually wait and help you get it right...however, I think you made a better decision as a guy. (We feel so unfulfilled when we don't have something good enough to show).
A lot of people got made I walked out on something nice but to me that felt like the best at that time and I still feel so till now
Thanks man