Sorry man. I wasn't trying to be a douche, I just knew you could take it--not only take it, but take and apply to your life.
PU skills are valuable, but if I had to pick between that and strong sense of purpose, I'd choose the latter. The former got me my beautiful GF; the latter helps me keep her. That said, at 21, and as everyone else here knows, I was struggling to find my sense of purpose too (old threads in the members lounge about depression, college, and money).
Think and hustle. That's the best advice I can give. Genuinely think about where you want to be. Write it down and surround yourself with reminders. Hustle toward your dreams, whatever they are. They'll change, and your plans will change with them. That's okay. Just keep hustling.
As a comparison, two years ago (it feels like a lifetime) I was working a full time sales job, full time college student, and doing direct sales on the side (which had destroyed my savings). I would soon work 3rd shift at Walmart, be a sample guy at Sam's Club, and hit $0 in my bank.
Now? Got that desk job (if you're into that sort of thing), paid off a student loan in full, and have added a few of the good zeros to the bank. My online marketing stuff is also starting to take off.
People say it gets better. For most people that's a lie. It gets better for those who hustle, which is why it'll get better for you.
Oh, and read books. The right books. If you're not sure which those are, you know where to find me