I was in your place at a time, we all were.. My solution was I gave myself a make-over (no homo) just got some new outfits, new haircut and hit the clubs. They key here was that I thought myself as a different person, a role that I am playing as an actor and so if I get shot-down or rejected it doesn't phase me because it isnt me!
Arguably this isn't that healthy for your inner game as you aren't being yourself but for me I gained enough confidence that I was soon able to be myself

. Just remember, fk them, who cares if a girl rejects you, its not you who;s getting rejected its the persona you're playing..
Tip: maybe play some old hardcore music before going out to get you in the mood like Thunderstruck - ACDC.
And possibly bring your cheat sheet (if you dont have make one) with you so you can;t make any excuses