A lot of guys think that once they have a girl's number, success!  Not so.  Just because you have a woman's number, it doesn't necessarily mean much.  It's quite possible that the girl took a liking to you, and you came across as cool dude. But a RANDOM dude nonetheless.  Sometimes women are flattered when they are asked for their number. So she gives it to you.  Sometimes women feel too guilty and bad to say "no" because you seem like a cool guy and they don't want you to think they're a bitch.  Even if, in the moment, she gives you her number and she would like you to call her, it doesn't mean that two days later when you DO call, that she'll be in same headspace. The fire of the moment is gone and now she starts to rationalize reasons not to take your call.

Last time I promised to teach you how to get a phone number from a woman. So here it is: The method I use to get phone numbers is quite unique. Instead of “going for a number directly” like most men do (after hesitating for minutes, days, or even weeks) I gauge a woman's interest level BEFORE asking for her digits. No matter I am meeting women at a party or at a bus stop, I ALWAYS start a conversation and gauge her interest level before asking for her phone number.

Persuasion is a universally recognisable component of our society. You see people influencing others everywhere you go: women trying to talk themselves out of speeding tickets, salesmen attempting to convince a potential buyer that a product's for them, defence attorneys arguing that their client is innocent - persuasion is everywhere, used by all of us, all the time.  Somewhere it's especially noticeable (and vital, if you want to be successful) is in the game of attraction and seduction. For a man to pick-up a girl - that is: find, approach, talk to her and arrange to take it further - he MUST understand and be able to use persuasive psychology. And it's that fact many men are surprised by when they hear it - that being successful with women isn't a God given talent or a roll of the dice; it's a skill like anything else.