Your lack of action. Approach about 130 day game women. You wont feel scared after it.
Ive done 3 approaches a day for a month challenge. It was a huge challenge where i skipped days. So i would cram them in the last 5 days, doing 70 approaches in 5 days because i only did 30 approaches last 25. 
After i got over this hump, approaching becomes unconscious and you just do it without understanding why youve approached her. You didnt think it, but your body automatically goes there.
If she doesnt react the way i want, i laugh. Look at it as a joke. And 40% of the time, the girl also laughs. A implicit communication that this all isnt serious. You flirting with her isnt serious. Men teasing physically, sexually escalating to the end with her isnt serious. Explicitly show that this flirting is playful, not serious even if it is daygame and sexual communication has to be much more implicit. 
One big huge thing is being unserious and playful and fun. Life is supposed to be played, not serious. When you frame the interaction as being non serious and playful, when the girl becomes serious, she looks like the weird valueless person and the sad thing is, it is true. Well, if the girl is serious, you can play up to her to get laid, but i doubt getting laid by such a girl is fun at all. Lol. 
Lol my advice is AA is caused by ones seriousness and lack of playfulness. You approach it as a game, not a play. Look at the difference between michael jordan and kobe bryant. Mj approaches the game of basketball more playfully. Kobe approaches basketball not as a play, but a game to be won. Mj plays with his teammates, drinks gambles and smokes with his teammates much more than kobe byrant. Kobe is a bit too serious, too isolated, doesnt smoke, doesnt hang out. They are both dedicated but the approach is that of seriousness vs playfulness. Therefore in the most crucial moments, mj was able to prevail because he was more relaxed, had more trusting teammates, and more open while kobe was clenched, isolated, and tense. Mj even hung out with his biggest rivals. Ofcourse it was a ploy to make enemies his friends... but you get the point that mj viewed it as fun. Kobe would never make friends with rivals.... he was too uptight for that. Trainer tim grover said kobe was a more hard worker, but his obsession was what limited his greatness. 
Obsession is seriousness.... its approach anxiety, its not clutch. 
Tenseness, AA is caused by being like kobe. 
Be fun, be not serious. If the girl doesnt like u being fun. Lol. Then there will be fun girls who do. And who would you rather be with. Fun hot girls, or dumb boring pretty girls. 
Maybe your goal is to just get hot girls regardless of her stupidity or fun. But i advise you to take care of your mental health by being biased towards fun and playfulness, therefore attracting playful hot women. I dont advise you to be tense and serious about gaming girls and therefore attracting tense and serious hot girls, and then having your life be influenced by tenseness and seriousness. It will hurt your mental health and destroy your relationship to God and your authentic self. 
Being playful and non serious will reduce your AA. Being playful wont attract serious hot girls, but it will attract hot fun girls and they will not give you any mental illness. Serious dumb girls will though so be careful. Being playful and non serious will deepen your relationship to God and your authentic self. Being serious and dull will further your distance from god and the world, you will be a detriment to humanity and you will not be happy because you are dull and serious. 
I hope this helped with logically convincing you to get out of AA. .
So this is my last question to you about being afraid of approaching a little cute "girl"
"Why so serious?"