Properly moving closer to your full potential is how to get a girlfriend. Properly getting a girlfriend and moving closer to family life overall is a way to move closer to your full potential (in other words, living fully). ~~They are the same actions~~ The same actions constitute both.
Edit: should have said "overall mindset" instead of "actions"
The narrow view you're talking about is bad for success in dating, so it's not what I'm talking about. I'm talking about things like working on yourself, having your own life, being an interesting person, becoming more confident, etc.
Edit: i forgot to mention that getting married and having a family doesn't guarantee that you reach full earthly potential, because there's a lot of good things to do