My current goal = to become better in my talkative skills and general interest in people (girls).

I have always used direct approach on HB's only while always ignoring the rest of the crowd (I never talked to a non-HB). That actually worked for me (I am not bad looking), but I have some flakes because I am too superficial (I only talk about playful bullshit and dont talk about our jobs etc).

Actually I usually cant keep a conversation going for more than 5 minutes unless the girl is spontaneous to me, I wish to learn to keep conversations going for longer than 5 minutes.

Problem is, with a non-HB i just dont have the will/energy to practice on her longer than 5 minutes.

Also because I am always thinking:
Should I practice on non-HB's as well (since HB's are hard to find and practice will be slower), or will I fuck up my game totally if I practice on non-HBs? (because HBs think totally different than non-HBs!)

What do you guys think about practicing on non-HBs for my goal?

Me personally I practice on everyone because i belive that the more you practice on others your conversation skills will get better and you will be able to surpass your small talk. It worked for me

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"Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind."

I have only been playing the game for a few weeks and I practice on everybody. Your social skills will improve and you might actually meet somebody you like. You will meet alsorts of people and can use the skills you learn to be able to talk to any women. I was in a strange bar the other day and was chatting to a girl with 19 piercings in her face, a guy with a 8 inch mohawk and a lesbian that was more alpha male than anybody in there. I really do think I have learn more social skills throught this.

Everyone. All the time. Everywhere.

Social dynamics is the core of pickup, so if you get good at social skills, then you can be a good PUA.

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"The 'Brick Walls' are there to allow you to prove how badly you want something!" ~ Randy Pausch

~ Rye

Practice on everyone. It is alot easier to talk to people you are not nervous or intimidated by. Just start a conversation in an everyday place (stores, parks, school, work,...). This will put you in a more comfortable SPAM where you do not feel like you have to be on your toes. This will tranfer into your game and improve your conversational skills. You'll fell alot more laid back. Just start practicing on FUG's and such, then as you feel more comfortable, practice on HB's. This method also helped my AA alot.