i have a plan to build up my confidence is to go up to girls and say hi, how are you ?
i have done thins before to a random girl and she smiled but i could tell she was thinking why would a random guys just come up to me and say hi (she want hot).

so by the time i go up to the girl i like i will be confident im just worried she will think im weird or am i over reacting to being worried of rejection?

You are only half right, but you are half wrong.

You are half right in that approaching girls will make you more confident.

You are half wrong with a lame opener like that, lol.

Approach, but do it from a DHV standpoint, be interesting, be cocky, be funny, be mysterious, be sexual, be alpha.

"Hey, how you doing?" sounds like you are conducting a poll.

What is a girl's incentive to respond in a good way to that?

Girls are approached all the time, if you are going to muster the balls to approach, fuck, at least do a good job!!!

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what dr. house brings to medicine, i bring to everyday life (an extreme dose of cynicism), don't listen to the curmudgeon!

Girls dont know it- you havent been told it- they are programmed to accept approaches from guys - weather they say so or not they want you to say hi- so do it. just do it.

Most girls who I have become friends with over the years spend Hours getting ready for a night out, the whole reason being to attract males, they literally shit bricks that they won't be approached when they're out with a lot of friends as to be the only girl not approached is social suicide and plummets her value within the groups hierachy sometimes to the point where they will be excluded from the group itself.

People harp on about approaching large sets (7+) yet when you do approach an HB in a set like this her value to her peers skyrockets and they love "Hey the guy approached ME out of all my friends!" However there is a need for calibration as sometimes a girl will blow you out in front of her friends to either boost her status (If she is the lowest beta) or to consolidate it (Alpha hen) so avoid the two, although if you do pull the Alpha female you own the entire group.

Sounds a bit like you're about to jump into a sales pitch but it's a start at least.

If your goal is to build confidence then her reaction isn't super important and she will probably only think you're weird if you do because you'll convey it.

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I'm a winner - I am going to win.

Honestly, your simply overthinking it WAY too much. Wanna know what to do? Walk around a public place where there's some cute girls your age. You can do it whichever way, but go up to a girl and ask her what time it is. That's it. Most girls will fumble around and look for their phones while you can give her a nice smile, and hey, if your feelin ballsy throw in a compliment!

"Hi" is just a little weird, and you'll end up feeling no different. You need to not just work on "speaking" to a woman but "talk" to her. Totally different things. If you cant feel comfortable around girls, you're not gonna get a girlfriend. Simple as that. You can play that "hi" crap to make yourself feel better but in the long run, that's nothing compared to this time being spent more wisely. Last thing you need to do is alienate girls all around you to make them like you more (?).

It's very unnatural and not even worth your time to focus on opening "sets" or women UNLESS you're with at least one friend. Two interesting people can liven up a group of people but one stranger jumping into a group already friend is just an overall waste of time.

Dont pressure yourself. I was horrible when I was pushing myself to talk to women more. I blew every little interaction out of proportion and couldn't control what I was saying....ugh, awful. That's what held me back alot, and the only thing that really made it easier was to fight through it. I knew if I didn't it would never go away. And slowly, after some time, that feeling really does go away. This whole thing is a process, keep your goals realistic and have fun talking to women. They're really not anything to be scared of at all. I'd bet the first girl you talk to has X2 the amount of insecurities you "think" you do.

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A Tru nigga

Listen up, by doing what you did, you've broken so many rules in the Pick Up Arts it's not even funny. If I were near you while you attempted to "say hi" to a girl and she, inevitably, rejects you... I gotta be honest I'll feel sorry for you, but that's why we're here; to help one another. You need some serious schoolin' in the basics of the Pick Up Arts. I'll start off in my advice my reminding you of value. In this game there are two kinds of people; those with high value and those with low value. Basically, people who chase others in the game have lower value. They're looking for something, they're needy. While the ones being chased have high value, they're like the prize or trophy. You are the chaser and she is the trophy. You have to turn all of that around. You have to make it so that she's chasing you. At that point you will have higher value than her, that's what it's all about. The key to engaging a successful conversation is to be within proximity, use one of your openers. Be close, but be distant at the same time. Have a good estimate of measurement between you and your target. Your body language has to be on point. Don't lean in and don't face your entire body toward her. That shows you're telegraphing interest and will lower your value. Instead, you should lean back on a wall and cross your arms or put your hands in your pocket. Talk to them from a distance, draw them in. Be the prize.

I'll be honest, as a teen and in my early 20s I was never the funny guy. I was the weird guy, then I started paying attention to what worked and what didn't. I had to put myself out there in order to see what was really funny. I think this anecdote works in this situation. Just throw shit out there and see what works and then you can work on variations of that as part of your routine.